Candidates face off tonight in key showdown

In an online video, ex-congressman Anthony Weiner says he's going to run for NYC mayor. Weiner resigned from Congress after admitting he sent lewd pictures of himself to several women via Twitter. Jim Axelrod reports on Weiner's decision.

Sen. Tom Coburn, R-Okla., talks to the "CBS This Morning" co-hosts about the tornado disaster in his state and how he thinks the federal government should help.

President Obama addressed the nation about the destructive tornado that struck Oklahoma and promised federal aid to help them rebuild their lives.

President Obama has declared a major disaster in Oklahoma, and is now sending federal help to the area devastated by a tornado. CBS News chief White House correspondent Major Garrett reports on the disaster response.

Oklahoma Gov. Mary Fallin discusses search and rescue efforts in the wake of the devastating tornado in Moore, Okla.

Gary Pruitt, CEO and president of the Associated Press, told "Face the Nation" that Justice Department investigators have gone too far and President Obama should step in and control them. Gayle King reports.