Or perhaps a member of Congress not named “No-Wall McCaul”. Goodlatte, Sensenbrenner, and Gowdy all have worked closely with DHS. Jason Chaffetz recently left Congress and, while chairman of the House Oversight and Government Reform Committee, had raked Obama’s Homeland Security officials over the coals. Tom Cotton is closely associated with the immigration issue, and is a former Army officer, but it seems unlikely he’d leave the Senate.

My own choice would be Peter Nunez, former Assistant Secretary of the Treasury for Enforcement in Bush I, meaning he oversaw the Customs Service, now part of DHS. Before that, he was U.S. Attorney in San Diego, dealing extensively with border issues. (Full disclosure: He’s also the chairman of my board.)