Tennessee Senator Bob Corker says he isn't ruling out joining the field of Republicans running for president in 2016. Corker, who is two years into his second term, said Wednesday that any decision on a White House bid would wait until next year. He also noted that his wife, Elizabeth, may be wary of the intense media attention on the presidential field. Any possible move to join the race could put Corker against fellow Republicans with higher national profiles such as potential candidates Sen. Marco Rubio of Florida and New Jersey Gov. Chris Christie. Following his election in 2006, Corker...