Jon Stewart may be a comedian, but when he barely masks his outrage behind the comedy, he's most effective.

Tuesday night he took on Congress.  It finally passed a bill to help pay for the medical bills for the 9/11 first responders.  That's right — those that survived 9/11 and went on to dig body parts out of the rubble have been having substantial medical problems these past nine years — mostly respiratory illness.  And it only took Congress nine years to do something about it.

And even then, as Stewart notes, that just HAD to stick on a little amendment to the law: i.e., before first responders can get money to cover their injuries, they have to show that they are not terrorists.

Seriously.

Watch Stewart's righteous (yet comedic) indignation – it's a classic: