sunday roundup week summer vacation end million americans wait long anticipate event washington iran nuclear agreement clear big hurdle opponent lose key procedural vote senate maybe vice president dick cheney strong opposition deal good argument provide win margin drive point home white house release cut video montage cheney wildly wrong assessment iraq show wrong wrong late stephen colbert finally debut literally biting bit medium trump addiction interview feature suave jeb bush stilte colbert actually switch colbert say play narcissistic conservative pundit narcissist funny give poignant interview joe biden human