Whoa!

Guardian UK: Mueller drew up obstruction indictment against Trump, Michael Wolff book claims

...the first count, under Title 18, United States code, Section 1505, charged the president with corruptly – or by threats of force or threatening communication – influencing, obstructing or impeding a pending proceeding before a department or agency of the United States.

The second count, under section 1512, charged the president with tampering with a witness, victim or informant.

The third count, under section 1513, charged the president with retaliating against a witness, victim or informant.