A vote was taken on a provision to prevent passengers who alert authorities to suspicious behaviour from being sued. Quite apart from anything else the six imams taking legal action against the citizens who spoke out against their behaviour should be chilling to people of all political stripes- plainly, the threat of being financially ruined will be enough to silence some people who are alert enough to see something suspicious; and that one person could be all that's standing between a terrorist and another tragedy.
The measure passed by 304 to 121. The names of the 121 Democrats who believe that passengers should have the threat of legal action hanging over them rather than being free to inform authorities about potential terrorist attacks can be found here. If they are your representatives I suggest you ask them why they believe that suing people is more important than keeping American citizens save from terrorist attack.