Califf played in the 2003 Confederations Cup as well as the 2009, the 2002 and 2003 Gold Cups and the 2007 Copa America. He scored his only international goal against Haiti on March 16, 2004. He served as captain for the team on July 5, 2007, when the United States lost 1–0 to Colombia during their final group game in Venezuela (2007 Copa America).