From his op-ed just published by the New York Times:
Mr. Trump’s claims of no collusion are, in a word, hogwash. The only questions that remain are whether the collusion that took place constituted criminally liable conspiracy, whether obstruction of justice occurred to cover up any collusion or conspiracy, and how many members of “Trump Incorporated” attempted to defraud the government by laundering and concealing the movement of money into their pockets.
Mr. Trump clearly has become more desperate to protect himself and those close to him, which is why he made the politically motivated decision to revoke my security clearance in an attempt to scare into silence others who might dare to challenge him. Now more than ever, it is critically important that the special counsel, Robert Mueller, and his team of investigators be allowed to complete their work without interference — from Mr. Trump or anyone else — so that all Americans can get the answers they so rightly deserve.