His golf trips, steering Secret Service and his entourage to Trump owned Hotels at exorbitant rates when on foreign visits, even if they are far away from where the meetings are, renting out entire floors of his DC Hotel to Saudis and others at exorbitant prices when they are on official business with the country. WAY above the normal rate, which they gladly pay to get their quid pro quo..
Mar-A-Lago jacked their rates WAY up after he became President to take advantage of his position which violates the Emoluments Clause of the Constitution . He often "entertains" foreign guests there on official business.
The owner of the Chinese "Massage Parlor" in FL that NE Patriots Owner Bob Kraft was busted in often has attended his parties at Mar-A-Lago. She is a Chinese national who has close ties to the government there.
She has a history of sex trafficking and owns numerous "rub and tug" parlors in several countries. There are pictures of the two yukking it up at a Super Bowl party, ironically right after Kraft got nabbed due to a hidden camera in an undercover sting.
No President is supposed to profit from the office while in office. They all profit big afterwards but no President has ever so blatantly flaunted the rules while still in office.
There's not enough space to list all of his grifts, but it is safe to say he has made millions off of the Presidency which makes his donation of his official salary a farce.