NEW : President riffs on news networks , Jay-Z , hairdo . NEW : `` Take the sequester : Republicans fell in love with this thing . Obama shifts to somber note in talking about tragedies in Boston , Texas . NEW : Conan O'Brien comes up with dream D.C. movie cast . NEW : The president says he is not worried that the economy will be hurt by a government shutdown.
NEW : President riffs on news networks , Jay-Z , hairdo . NEW : Obama shifts to somber note in talking about tragedies in Boston , Texas . NEW : Conan O'Brien comes up with dream D.C. movie cast . NEW : The president says he is not worried that the economy will be hurt by a government shutdown.