Sen. John McCain discussed the Veterans Choice Act at a news conference on Tuesday, with fellow Arizona Republican Sen. Jeff Flake. Mark Wilson/Getty Images hide caption

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Secretary of Veterans Affairs Eric Shinseki addresses the National Coalition for Homeless Veterans in Washington, D.C., Friday, shortly before he resigned under bipartisan pressure. Win McNamee/Getty Images hide caption

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Eric Shinseki resigned as the head of the Department of Veterans Affairs on Friday, in what President Obama said was a decision spurred by a desire to not distract from efforts to fix the agency's problems. Earlier Friday, Shinseki spoke at a conference in Washington. Win McNamee/Getty Images hide caption

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Tom Tarantino, chief policy officer at Iraq and Afghanistan Veterans of America, speaks at a news conference on Capitol Hill Thursday about holding the Department of Veterans Affairs accountable. Mark Wilson/Getty Images hide caption

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General Eric Shinseki, Secretary of Veterans Affairs, speaking in December. Congress has voted to issue a subpoena to Shinseki to testify in connection with delays in treatment at VA hospitals. Paul Morigi/AP IMAGES FOR THE NATIONAL ASSOC hide caption

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