door sessions, some lawmakers are still opposed. >> inserting the united states in a sectarian civil war in syria is extraordinarily perilous, and could well have unintended effect of advancing the interest of the al qaeda terrorists. >> reporter: in an open house hearing, kerry was taunted by pro-pink protesters were symbolic blood on their hands. >> the world is wondering whether the united states of america is going to consent through silence. >> reporter: kerry, the secretary of defense, and chairman of the joint chiefs were also greeted with bipartisan skepticism, including being asked if u.s. officials trust the opposition in syria. >> you're making decisions to go into war and put american lives at risk, so it's a simple concept. you either trust or do not trust, and if you do not trust, we don't call these people our allies or support.