JASON CHAFFETZ (FOX NEWS CONTRIBUTOR): Remember, the House Democrats chose not to pursue John Bolton. And so why -- any senator who says “I'm going to vote no on witnesses” is taking the exact same position that the House Democrats took. But probably most important is the facts are there. The aid did flow. It did go before the deadline. There was a planned meeting, as was pointed out Saturday by the president's legal team, to have a meeting with the president. The president of Ukraine was not -- didn't think that there was a problem. So, when the aid does flow, it does go without the investigation of Joe Biden. Then you have more than ample evidence that what actually happened is enough of a defense.