File photo of U.S. Representative Mike Pence in Washington

 
File photo of U.S. Representative Mike Pence in Washington
U.S. Representative Mike Pence (R-IN) addresses the group Americans for Prosperity in Washington, in this November 15, 2010 file photo. Pence on Thursday ruled out a 2012 run for the Republican presidential nomination but left the door open for a campaign to become Indiana's governor. Pence, 51, made his announcement in a letter to supporters posted on Facebook. REUTERS/Jonathan Ernst/Files (UNITED STATES - Tags: POLITICS ELECTIONS)