Hehe. Can they cut off his salary and medical insurance?
They can defund the entire [in]justice department if they want to. Since all spending bill must originate in the House, I don't think they even need the Senate's cooperation -- the House by itself might not be able to cut off funds already appropriated, but they could shut it down next budget cycle.
The thing is, Issa and Grassley are just posturing (if they meant business they would have acted a long time ago) and the rest of Congressional Republicans are just humoring them.