Mississippi Sen. Thad Cochran, who is seeking his seventh term, is in a heated primary race with a Tea Party-backed challenger. Supporters of his opponent are accused of conspiring to photograph Cochran's bedridden wife. J. Scott Applewhite/AP hide caption

itoggle caption J. Scott Applewhite/AP

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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Republican Sen. Bob Corker, the ranking member on the Senate Foreign Relations Committee, says he thinks President Obama hasn't responded strongly enough to the crises in Ukraine and Syria. Chip Somodevilla/Getty Images hide caption

itoggle caption Chip Somodevilla/Getty Images