Some of the left wing ideologues like Jimmy Carter's former National Security Advisor, suggested that the US might attack Israeli planes, if they were trying to carry out a bombing mission against Iran (at the very least in Iraqi airspace).
In light of the real nuclear threat that Iran poses to Israel and the threats against Israel to not take any effective action and in light that fought a long war in Libya without congressional approval, I propose that Congress tries to pass a law specifically forbidding the USA to shoot at Israeli planes.
Even if the law doesn't pass it draws attention to how anti-Israel this president is and how Obama uses military force to advance the cause of Islam.