The U.S. Senate's compromise immigration bill offers something for everyone to hate, including presidential candidates forced to confront the divisive issue. Unlike the war in Iraq, which separates lawmakers mainly along party lines, immigration fractures Republican and Democratic ranks from within: splitting business interests from social conservatives, dividing labor from Hispanic groups. "The issue is fraught with danger," said John Anzalone, a Democratic pollster. "It's one where it's tough to please everybody within your base or coalition." For that reason, perhaps, the only major candidate who embraced the bipartisan proposal announced Thursday was Sen. John McCain, R-Ariz., -- which was...