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WASHINGTON (AP) — The top Democrat on the House Oversight panel said Monday that the authors of an independent investigation into the deadly assault in Benghazi, Libya, should answer questions about their work at a congressional hearing, not in a private deposition that the Republicans want.

"If our committee is truly interested in improving the security of American diplomatic personnel overseas, members of our committee and the American public should hear first-hand from the individuals who have done the most exhaustive review of these attacks," Rep. Elijah Cummings of Maryland wrote in a letter to Rep. Darrell Issa, R-Calif., the panel's chairman.

In a Sunday talk show appearance, Issa said he would seek sworn testimony from veteran diplomat Thomas Pickering and retired Adm. Mike Mullen, the former chairman of the Joint Chiefs of Staff. The two conducted an independent investigation of the Sept. 11 attack that killed Ambassador Chris Stevens and three other Americans.

Their report was highly critical of the State Department's handling of at the U.S. outpost. Pickering, who also appeared on the Sunday shows, defended his scathing assessment but absolved former Secretary of State Hillary Rodham Clinton.

"We knew where the responsibility rested," said Pickering, whose career working for Republican and Democratic administrations, spans four decades.

Issa said he wants to know with whom the pair spoke to reach their conclusions about Clinton. Cummings suggested that they testify in public before the committee on May 22.

"This is a failure, it needs to be investigated. Our committee can investigate. Now, Ambassador Pickering, his people and he refused to come before our committee," Issa said Sunday.

Pickering, sitting next to Issa during an appearance on one Sunday show, disputed the chairman's account and said that he was willing to testify before the committee.

"That is not true," said the former top diplomat, referring to Issa's claim that he refused to appear before the committee.

In a separate interview, Pickering said he asked, via the White House, to appear at last Wednesday's hearing by the House Oversight and Government Reform Committee in which three State Department officials testified. He said he could have answered many of the questions lawmakers raised, such as whether U.S. military forces could have saved Americans had they dispatched F-16 jet fighters to the consulate, some 1,600 miles away from the nearest likely launching point.

"Mike Mullen, who was part of this report and indeed worked very closely with all of us and shared many of the responsibilities directly with me, made it very clear that his view as a former chairman of the Joint Chiefs of Staff that there were nothing within range that could have made a difference," Pickering said.

Republicans and Gregory Hicks, the former deputy chief of mission in Libya, have questioned why the military couldn't move faster to stop the two nighttime attacks over several hours. Hicks, who testified before the House Oversight panel, said a show of U.S. military force might have prevented the second attack on the CIA annex that killed security officers Tyrone Woods and Glen Doherty.

Robert Gates, a former Defense secretary, defended the decisions made at the time, saying: "I think my decisions would have been just as theirs were," adding "getting somebody there in a timely way — would have been very difficult, if not impossible."

The Accountability Review Board, which Pickering headed with Mullen, did not question Clinton at length about the attacks but concluded last December that the decisions about the consulate were made well below the secretary's level.

In her last formal testimony as secretary of State, Clinton appeared before two congressional committees investigating the Benghazi attacks. She took responsibility for the department's missteps and failures leading up to the assault, but said that requests for more security at the diplomatic mission in Benghazi didn't reach her desk.

Pickering and Mullen's blistering report found that "systematic failures and leadership and management deficiencies at senior levels" of the State Department meant that security was "inadequate for Benghazi and grossly inadequate to deal with the attack that took place."

Issa spoke on NBC's "Meet the Press." Pickering spoke on CNN's "State of the Union," CBS' "Face the Nation" and NBC. Gates appeared on CBS.

WASHINGTON (AP) -- Cancer patients could face high costs for medications under President Barack Obama's health care law, industry analysts and advocates warn.

Where you live could make a huge difference in what you'll pay.

To try to keep premiums low, some states are allowing insurers to charge patients a hefty share of the cost for expensive medications used to treat cancer, multiple sclerosis, rheumatoid arthritis and other life-altering chronic diseases.

Such "specialty drugs" can cost thousands of dollars a month, and in California, patients would pay up to 30 percent of the cost. For one widely used cancer drug, Gleevec, the patient could pay more than $2,000 for a month's supply, says the Leukemia & Lymphoma Society.

New York is taking a different approach, setting flat dollar copayments for medications. The highest is $70, and it would apply to specialty drugs as well.

Critics fear most states will follow California's lead, and that could defeat the purpose of Obama's overhaul, because some of the sickest patients may be unable to afford their prescriptions.

"It's important that the benefit design not discriminate against people with chronic illness, and high copays do that," said Dan Mendelson, president of Avalere Health, a data analysis firm catering to the health care industry and government.

Avalere's research shows that 1 in 4 cancer patients walks away from the pharmacy counter empty-handed when facing a copay of $500 or more for a newly prescribed drug.

"You have to worry about a world where if you happen to contract cancer or multiple sclerosis, you are stuck with a really big bill," Mendelson said. "It's going to be very important for states to take a long, hard look at their benefit design."

Although the money for covering uninsured Americans is coming from Washington, the heath care law gives states broad leeway to tailor benefits, and the local approach can also allow disparities to emerge.

A spokesman for Covered California said state officials are trying to balance between two conflicting priorities: comprehensive coverage and affordable premiums.

"We are trying to keep the insurance affordable across the board," said Dana Howard, the group's spokesman. "This is just part of trying to manage the overall risk of the pool." Covered California is one of the new state marketplaces where people who don't get coverage on the job will be able to shop for private insurance starting this fall. Coverage takes effect Jan. 1.

Insurers are forecasting double-digit premium increases for individual policies, as people with health problems flock to buy coverage previously denied them. The Obama administration says the industry warnings are overblown, and that for many consumers, premium increases will be offset by tax credits to help buy insurance. And officials say it's important to realize that the law sets overall limits on patients' liability, even if those seem high to some people. Still, a full picture of costs and benefits isn't likely to come into focus until the fall.

Howard said California officials are aware of the concerns about drug costs and are trying to make medications more affordable.

Meanwhile, he said consumers will be protected because the law limits total out-of-pocket costs - the deductibles and copayments that policy holders are responsible for, apart from monthly premiums. In California, the annual out-of-pocket limit for an individual is $6,400, although it can be as low as $2,250 for low-income people. Once that limit is reached, insurance pays 100 percent.

That's still a lot of money, and such reassurances haven't dispelled the concerns.

"The intent of the Affordable Care Act is to make sure that all Americans have access to quality, affordable health care," said Brian Rosen, a senior vice president of the Leukemia & Lymphoma Society. He adds that there is a danger that the insurance marketplaces "will discriminate against the patients with the highest medical need. That would completely undermine the spirit of the ACA."

The group has been joined by Rep. Doris Matsui, D-Calif., in urging state officials to reconsider the policy. The high copays "could prevent many patients from receiving the lifesaving treatments they need because of prohibitively high cost," Matsui wrote to the state.

The problem with costly drugs is similar to another money issue with the health care law - a provision that could price millions of smokers out of coverage. Insurers are allowed to charge tobacco users buying an individual policy up to 50 percent higher premiums. For a 55-year-old smoker, the penalty could reach nearly $4,250 a year, on top of the standard premium. California is trying to override that problem by passing its own law. There's also pending state legislation to address some issues with prescription costs, but its prospects are unclear.

Meanwhile, leukemia patient Lisa Lusk worries about what will happen to her. A nursing assistant who lives near Fresno, Lusk is hoping to return to work in the next few months. When that happens, she expects to lose emergency coverage she's now getting through the state. And the medication Lusk takes to manage her chronic form of the disease costs more than $5,000 a month.

"I'm scared that when I get a job my copay may be more than $1,500 a month," said Lusk. "I'll just be working to pay for my medications."

© 2013 THE ASSOCIATED PRESS. ALL RIGHTS RESERVED. THIS MATERIAL MAY NOT BE PUBLISHED, BROADCAST, REWRITTEN OR REDISTRIBUTED. Learn more about our PRIVACY POLICY and TERMS OF USE.

LONDON (AP) -- Two respiratory viruses in different parts of the world have captured the attention of global health officials - a novel coronavirus in the Middle East and a new bird flu spreading in China.

Last week, the coronavirus related to SARS spread to France, where one patient who probably caught the disease in Dubai infected his hospital roommate. Officials are now trying to track down everyone who went on a tour group holiday to Dubai with the first patient as well as all contacts of the second patient. Since it was first spotted last year, the new coronavirus has infected 34 people, killing 18 of them. Nearly all had some connection to the Middle East.

The World Health Organization, however, says there is no reason to think the virus is restricted to the Middle East and has advised health officials worldwide to closely monitor any unusual respiratory cases.

At the same time, a new bird flu strain, H7N9, has been infecting people in China since at least March, causing 32 deaths out of 131 known cases.

WHO, which is closely monitoring the viruses, says both have the potential to cause a pandemic - a global epidemic - if they evolve into a form easily spread between people. Here's a crash course in what we know so far about them:

Q: How are humans getting infected by the new coronavirus?

A: Scientists don't exactly know. There is some suggestion the disease is jumping directly from animals like camels or goats to humans, but officials are also considering other sources, like a common environmental exposure. The new coronavirus is most closely related to a bat virus, but it's possible that bats are transmitting the disease via another source before humans catch it.

Q: Can the new coronavirus be spread from human to human?

A: In some circumstances, yes. There have been clusters of the disease in Saudi Arabia, Jordan, Britain and now France, where the virus has spread from person-to-person. Most of those infected were in very close contact, such as people taking care of a sick family member or health workers treating patients. There is no evidence the virus is spreading easily between people and all cases of human-to-human transmission have been limited so far.

Q: How are people catching the bird flu H7N9?

A: Some studies suggest the new bird flu is jumping directly to people from poultry at live bird markets. Cases have slowed down since Chinese authorities began shutting down such markets. But it's unclear exactly what kind of exposure is needed for humans to catch the virus and very few animals have tested positive for it. Unlike the last bird flu strain to cause global concern, H5N1, the new strain doesn't appear to make birds sick and may be spreading silently in poultry populations.

Q: What precautions can people take against these new viruses?

A: WHO is not advising people to avoid traveling to the Middle East or China but is urging people to practice good personal hygiene like regular hand-washing. "Until we know how and where humans are contracting these two diseases, we cannot control them," said Gregory Hartl, WHO spokesman.

Q: Which virus should we be more worried about?

A: It's impossible to know. "We really don't want to play the game of predicting which virus will be more deadly than the other," Hartl said. At the moment, both are worrisome since so little is known about how they are infecting humans and both appear to cause severe disease. "Any virus that has the ability to develop the capacity to spread from human to human is of great concern to WHO," he said.

© 2013 THE ASSOCIATED PRESS. ALL RIGHTS RESERVED. THIS MATERIAL MAY NOT BE PUBLISHED, BROADCAST, REWRITTEN OR REDISTRIBUTED. Learn more about our PRIVACY POLICY and TERMS OF USE.