There have been plenty of actions to try to broker peace, they're just not happening out in the open for everyone in the public to see. As I understand it, the current attempts are leaning heavily in empowering the Palestinian Authority, and helping reform them at the same time so that they're more palatable for Palestinians who may have formerly been under Hamas. Plus, you know, our government repeatedly advising and asking Israel's to stop with the violence and actually come to the peace tables and talk.
Unless by "action" you mean something stupid like, I dunno, sending our troops out there to get in front of Israel's forces and convince them to stop firing, or something.