FILE - In this Nov. 6, 2012, file photo, Rep. Tom Latham, R-Iowa, speaks to supporters during an election night rally in Des Moines, Iowa. Latham announced Tuesday, Dec. 17, 2013, he won't seek re-election in 2014, creating a potentially competitive race for a seat that likely would have favored the 10-term Iowa Republican. (AP Photo/Charlie Neibergall, File)