Even though he had an appointment to the University of Virginia in his pocket, Pop several times extended his stay at the White House to help out with the struggles over inflation and recession, and never once publicly said a word against Nixon.
Pop helped out at the White House several times.  
mnli hypothesis: Pop helped out at the White House several times.   premise: Even though he had an appointment to the University of Virginia in his pocket, Pop several times extended his stay at the White House to help out with the struggles over inflation and recession, and never once publicly said a word against Nixon.