Wed. preview: Sen. John McCain

Sen. John McCain, R-Ariz., is seen on "CBS This Morning," April 26, 2012.
CBS News

(CBS News) Sen. John McCain, R-Ariz., the ranking member on the Senate Armed Services Committee will appear on "CBS This Morning" Wednesday.

McCain will speak about his effort to investigate the recent leaks of national security information, the race for the White House and the recent killing of a top al Qaeda member.