Christmas tree bomber's defense: Federal agents made me do it

Defense lawyers for a Somali-American teen charged with trying to detonate a bomb at a holiday tree-lighting ceremony say a federal agent tried to coerce him into violence. Attorneys for Mohamed O. Mohamud said in a filing Friday that emails from an agent known only as "Bill Smith" prove the teen's innocence and show the federal government is not playing fair with the evidence it is supposed to provide.