Why did the president and congress declare war on iraqi in 2003

President George W. Bush’s decision to invade Iraq on March 20, 2003, was not a blunder on the scale of those of Napoleon, Hitler, and Tojo.

There was a case to be made on several grounds for operations against Saddam Hussein. The initial phase of combat was highly successful, and some still argue that the American investment was worth the cost of toppling the Saddam regime.

Bush was reelected in November of 2004 as much because of as despite his invasion of Iraq. His subsequent 2007 decision to launch the "surge" did limit some of the damage.

The main premise for the war was that Saddam had weapons of mass destruction (WMDs) and that these were at risk of falling into the hands of terrorists. In the end, however, there were no such weapons, and Saddam’s links to al Qaeda were unproven. This robbed the invasion of legitimacy.