I'm not sure this really counts as a veiled threat:

I mean, I guess the threat's a little veiled, but not really. I suppose the only question is whether Rep. Issa (R-CA) is trying to say that if Waxman went to Iraq Blackwater personnel would simply fail to protect him, thus leading to his death at insurgent hands, or if he means that Blackwater personnel might shoot him in the back. And a further question: If Blackwater personnel assigned to do security for a US Congressman did shoot him in the back, what's the legal remedy?