Mmm hmm. That won't fly. In F&F guns were intentionally allowed to "walk." In fact the terms "walk" and "walking" were coined by ATF agents for intentionally letting guns get out of their control as opposed to losing them due to bad circumstances. ATF field agents also testified under oath that they had never hear of letting guns "walk" before F&F. It's all right here...
The Department of Justice ’ s Operation Fast and Furious: Accounts of ATF Agents
Issa can produce numerous agents who can and will testify that "walking" guns never happened before 0bungles and WithHolder were in charge. Who or what can the Dems bring as evidence to the contrary? It's a bluff. A rather stupid bluff.
BTW, aren't Dem reps on the Oversight Committee supposed to be looking for the truth not devising strategies to help coverup or excuse it? If 0bama starts loading Indians up in trains and moving them to new reservations are they going to say "So what? Andy Jackson did it too?"