Why won't they simply impeach him?
Because it hasn't been proven that Bush hasn't committed a crime. Even though they were unfairly trapped into committing a crime, Johnson and Clinton did actually commit crimes and that is why they were impeached.
Also, the Democrats forced Pelosi to take impeachment of Bush off the table in order to improve their chances of winning control of Congress and keeping it beyond the 2007 - 2009 timeframe.
He started a war on lies and he goes on with his plan against the will of a larger part of the population, the Senate, the military advisors.
Here's the thing.
When the Iraq War started, a very slight majority of the population actually supported it. To say he went against the will of a larger part of the population is false because America was basically split 50-50 over whether or not we should go to war.
To say that he went against the will of the Senate is also false because it was them that gave Bush the approval to go to war. To impeach him over going to war in Iraq, would make the Democrats look like hypocrites.
To say that he went against the will of the military advisors is also false. Donald Rumsfeld and Paul Wolfowitz were in charge of the Department of Defense, they supported the war. Also, regime change in Iraq was always a government policy concerning Saddam Hussein since the days of Bill Clinton.
Not only that, there is just no way to actually prove for certain that Bush has indeed lied. It can simply be backed up by the defense of false intelligence. Nations such as France had the same beleif that Saddam Hussein had weapons of mass destruction. The United Kingdom, Spain, Poland, Australia, and others beleived that Saddam had weapons of mass destruction.
Wondering how much Haliburton is giving him for his services.
Haliburton has had a history of taking part in reconstruction efforts. During the first Bush Administration, they took part in bringing burning oil wells under control in Kuwait. During the Clinton Admininstration they supported US peacekeeping efforts in Bosnia and Croatia. And now they are supporting US efforts in Iraq under the current Bush Administration