AC 360 hosts tea partier, birther, radio host Mark Williams -- despite CNN chief Klein's reported memo to “avoid booking” radio hosts Written by Media Matters Staff Published 09/10/09 11:27 PM EDT From the September 10 edition of CNN's Anderson Cooper 360: Video file Previously: CNN's Lou Dobbs exception Another birther on CNN: Newsroom hosts Mark Williams to promote Tea Party Express Fox News hosts birther Mark Williams to promote “how you can join” anti-Dem Tea Party Express