president trump's health after an unscheduled visit to walter reed hospital over the weekend that cnn has learned did not follow protocol of a routine presidential medical exam. let's begin with cnn's lauren fox live on capitol hill with our top story. lauren? >> well, alisyn, it's a huge week on capitol hill with eight witnesses coming as part of this impeachment inquiry. tomorrow democrats and republicans will hear from timothy morrison, the former nsc official on the july 25th phone call between president trump and president zelensky, but he's very important because a transcript released of his closed door deposition reveals that he came to understand that gordon sondland, the eu ambassador, was being directed by president trump to ask the ukrainians to investigate the president's political rivals. he testified that he understood that trump and sondland had spoken approximately five times between july 25th, the date of that phone call between trump and zelensky, and september 11th