WASHINGTON (Reuters) - Donald Trump on Tuesday declined to endorse two fellow Republicans, U.S. House of Representatives Speaker Paul Ryan and U.S. Senator John McCain, in their upcoming re-election battles after both Republicans criticized his remarks about the family of a slain Muslim U.S. Army captain. Mirroring the language Ryan used about supporting Trump before his eventual endorsement, Trump told The Washington Post he’s “not quite there yet” on supporting the congressman in Tuesday’s primary in Wisconsin. 