Maybe y'all weren't informed enough. Harry Truman sent Troops to Korea on an (illegal) executive order. He mishandled the conflict to the point that we ended up after a three year quagmire right where we started at the loss of anywhere from 35,000 to 50,000 Americans. LBJ sent Troops to Vietnam based on a faked crisis. Bill Clinton bombed Europe without permission from congress after he was caught with his pants down. George Bush sought and received permission from congress (36% of democrats) for boots on the ground in Iraq. The intention was to force Saddam to comply with about a hundred U.N. sanctions. WMD's were way down on the list although Bill Clinton also claimed they were there. Iraq was one of the most successful U.S. military missions in modern history and democrats hated Bush for it. When the conflict was over democrats (and the CIA) and the media stabbed Bush in the back with the WMD rhetoric.
Iraq was already crippled by two decades of war and sanctions before Bush's invasion.