Here's a quick look at the program at the heart of this particular conflict between Congress - or at least the House Oversight Committee's chair Darryl Issa - and the Obama Administration - or at least the Attorney General Eric Holder.
Gunrunning programs have been around for a while apparently.
And here's an analysis of the current conflict (the checking and the balancing and the ambition counteracting ambition) in light of past conflicts between Congress and the executive over similar matters. This ain't this first time and it ain't the last. tha author suggests that if the House wants to get at Holder, it should impeach him. That's what its for. A contempt citation is cheap talk.