GOP presidential hopefuls are largely steering clear of Nevada rancher Cliven Bundy’s fight with the federal government. The showdown, which left armed militia members and feds staring each other down last week, has captivated talk radio and cable news shows, turning Bundy into a conservative cause célèbre. Yet Sen. Rand Paul (R-Ky.) and Mike Huckabee, a former Arkansas governor and 2008 presidential candidate, are the only big-name Republicans to have spoken out on the dispute so far. Tea Party favorite Sen. Ted Cruz (R-Texas) has been silent, and Sen. Marco Rubio (R-Fla.) and Rep. Paul Ryan (R-Wis.) have also not...