The latest headline is that the Democratic Leadership is saying Bush doesn't have the authority to go into Iran militarily if he deems it necessary.
Senator Harry Reid has made similar comments recently.
Regardless of your view on Bush, there is a rather obvious point to make here. Pelosi and Reid are wrong. The President has clear Constitutional authority to use the US military, provided he abides by the War Power Clause/Resolution. Certainly, he can't wage a unlimited war in terms of timeframe, but he can in fact order an attack. There are several reporting requirements, but all the President actually needs to do is determine that there is a "circumstance" that requires military action.
Text of War Powers Resolution:
And of course, Article II:
The President shall be Commander in Chief of the Army and Navy of the United States, and of the Militia of the several States, when called into the actual Service of the United States....
Clearly, the President does have the authority. It wouldn't be popular, and Congress could always countermand the order or refuse funding.
Your thoughts...and please, keep it on topic. This isn't another opporutnity to explain why you don't like the Iraq war and why you think Bush is a warmonger.