U.S. officials say the suspect in the deadly National Guard ambush in Washington, D.C. worked closely with the CIA in Afghanistan and was vetted. CBS News' Nancy Cordes asked President Trump why his administration pinned blame on previous asylum and vetting policies when the Department of Justice inspector general earlier this year reported the DHS and FBI conducted thorough vetting of Afghans that were resettled in the U.S. Mr. Trump deflected and blamed the Biden administration for letting Afg