But the Syriana Oscar winner isn't stopping there: On Monday, Clooney is set to attend a fundraiser in Switzerland that aims to flood Obama's campaign coffers with even more cash, according to published reports.
Guests are expected to shell out big bucks for some face time with the 51-year-old silver fox at the Geneva shindig.
Just how much? Well, it'll cost you $15,000 for a seat, $5,000 for a pic with him and $1,000 for a spot at a pre-dinner reception.
So will this pull in the same big bucks as that $12 million-earning Obama fundraiser which Clooney hosted at his home back in May?
Dial down those expectations a wee bit: Organizers expect the event to rake in $500,000 from about 130 attendees.
The gratitude certainly isn't lost of Obama: During an interview with Entertainment Tonight last week, the president praised Clooney's humanitarian efforts and described the actor as "a good man and a good friend."
Mr. President, may we suggest another way to express your thanks: How about a cameo in an upcoming Clooney film? Now that's a box-office-busting team-up!