US cuts off information sharing with the IAEA

I saw an article on a few days ago, and I must admit that I’m quite confused after reading it. In particular, it says:

“The United States has virtually cut off information-sharing with the IAEA since invading Iraq in March 2003 on the premise that the country was hiding weapons of mass destruction.”

So …. because Saddam Hussein was allegedly hiding WMD (which by the way, despite their best efforts, no one has found) the United States has stopped sharing information with the IAEA now? Where is the cause and effect? Do you see it? I certainly can’t. It really sounds kind of like me saying that I’m going to sleep early tomorrow because last Tuesday I ate a cheeseburger.