"[T]he investigation itself seemed to have... pulled a lot of punches. There were things in here [Meller Report] that... I have some of the greatest legal scholars in the United States sit in the green room with me and go, "How is this not what it is?"... [C]ollusion is a term that the president has chosen... but what... most of this report will tell you in great detail is that there was a massive, ginormous, multi-year Russian intelligence operation to break the American system of democracy and to choose a president of the United States."