FILE - In this Wednesday, May 7, 2014, file photo, Actress and cancer survivor Valerie Harper, left, greets ranking member Sen. Susan Collins, R-Maine, before the start of a Senate Special Committee on Aging hearing to examine the fight against cancer, focusing on challenges, progress, and promise, on Capitol Hill in Washington. Independent U.S. Sen. Angus King may caucus with Democrats but he's endorsing Republican colleague Susan Collins in her bid for a fourth term in the Senate. (AP Photo/Manuel Balce Ceneta, File)