Congress just declared war; you just don't realize it.
Iraq agreed to the overflights and to the no-fly zones as a result of the Gulf War coalition putting Hussein back in his box in 1991.
IMO, violation of the no-fly zones is reason enough for the US and Britain to bomb the hell out of Iraq.
You might want to read the Cease Fire Agreement. He agreed to the no fly zones and we agreed to stop kicking the hell out of his army. He broke his part, now we are about to solve the problem.