This wasn't the first time Stark had been in front of a governmental hearing. It was, however, the first time he was being charged for doing the right thing. So ironic. He knew the whole thing was bullshit, it was just finding a way through it. Between he, Fury, and the goodness of Steve they could probably pull it off.
"American Treasures first, please." Tony smirked lazily back to Steve, motioning with his hand to go. While politics weren't really his thing, he was still calculative, and able to conduct answers and responses with the same knowledge in which he would engineer.
Steve on the other hand, did not have the advantage of knowing the playing field, or all of the negative tools the opposing party could and would throw at them. What he did have, was his Golden Boy attitude, and the support of the American people. Captain America did what was right and nothing else. Should the slime balls find their way around that? Well then, Tony would slap them senseless with logic.