House Republicans will have their largest majority since the 1930s next year, but that doesn't mean Speaker John Boehner's (R-Ohio) job will be easy.The House GOP leadership's struggles in keeping members in line over the past four years have been well documented. Some of the incoming freshmen will likely join the ranks of conservatives who frequently oppose leadership initiatives.Among the new freshmen, for instance, is one congressman-elect who has called Hillary Clinton the "anti-Christ," another who has suggested Muslims don't deserve First Amendment rights, and yet another who has declared himself open to the idea of the United States invading...