Social conservatives are blasting the National Council for a New America, House Minority Whip Eric Cantor’s (R-Va.) nascent effort to rebrand the Republican Party, as a misguided and weak-kneed initiative that is out of touch with the GOP rank and file. The council, unveiled last week by Cantor and Sen. John McCain, is designed to be a “forward-looking, grass-roots caucus” that formulates policy prescriptions and communicates with voters in a way that could expand the Republican ranks. In announcing the formation of the group, McCain said he hoped the group would attract moderates and “like-minded Democrats” to a series of...