Before the US invaded Iraq in 2003 U.S. government officials suspected Saddam Hussein of harboring?

Before the U.S. invaded Iraq in 2003, government officials suspected Saddam Hussein of harboring weapons of mass destruction (WMDs), including biological, chemical, and potentially nuclear weapons. These suspicions were based on intelligence reports and Hussein's history of using chemical weapons in the past. The U.S. justified the invasion partly on the belief that Iraq posed a significant threat to regional security and global stability due to these alleged WMDs. However, no substantial stockpiles were found after the invasion, leading to widespread controversy and debate about the legitimacy of the war.