I will answer the question for you....... there are many thoughts about why W wanted to go to war. One is that Saddam Hussein tried to have Bush 41 killed. The other major thought is that Cheney wanted to finish what 41 started but failed to complete.

So the Bush administration went on a PR campaign for war. Using the 9/11 attack as the basis for war it was relentless on TV and talk radio. Many in the US thought that Iraq was behind the 9/11 attacks. The CIA believed their informants who later were found not to be credible.

I can remember several statements on the Sunday morning shows....but my personal favorite was Condi Rice saying "Do we need to wait for the mushroom cloud".

Why did they lie....because they wanted to get Saddam Hussein.