** FILE ** Sen. Roger Wicker, R-Miss., speaks during a news conference at the Capitol in Washington, Jan., 2009. Senate Majority Leader Reid said Tuesday, April 16, 2013, that letter with ricin or another poison was sent to Wicker. (Associated Press)

** FILE ** Sen. Roger Wicker, R-Miss., speaks during a news conference at the Capitol in Washington, Jan., 2009. Senate Majority Leader Reid said Tuesday, April 16, 2013, that letter with ricin or another poison was sent to Wicker. (Associated Press)