<human>:  Why did the US invade Iraq?
<bot>: The US invaded Iraq because they believed that Saddam Hussein had weapons of mass destruction. The US government claimed that Saddam Hussein had an active nuclear weapons program and that he had links to Al Qaeda. In 2003, the US invaded Iraq and removed Saddam Hussein from power. The US then began to occupy Iraq, but the occupation of Iraq has been a failure. The US government claimed that Iraq had weapons of mass destruction, but the weapons were never found.