Washington (CNN) - Sen. John McCain said Saturday that he supports an effort in the House of Representatives to force a vote on an immigration bill. "I strongly support the bipartisan effort in the House to file a discharge petition to reopen the debate on immigration reform and bring up our #USAAct for a vote," the Arizona Republican wrote in a tweet. A bipartisan group of lawmakers, including Republican Reps. Will Hurd of Texas, Jeff Denham of California and and Carlos Curbelo of Florida, introduced the Uniting and Securing America Act in January. The bill would shield undocumented immigrants brought...