When I asked Senator McCain about MRAP on Monday, some folks seemed confused. But there’s no doubt that the MRAP program, which seeks to replace up-armored Humvees in Iraq with sturdier, mine resistant and ambush protected (MRAP) vehicles, has risen to the level of presidential politics. In fact, Joe Biden’s whole campaign for president looks to be built around this one issue.

Screen shot of MRAP on the homepage of Biden’s campaign website.