Actor Matt Damon attends the premiere of TriStar Pictures' 'Elysium' at Regency Village Theatre on August 7, 2013 in Westwood, California. (Photo by Kevin Winter/Getty Images)

Actor Matt Damon was one of President Barack Obama‘s most enthusiastic celebrity backers when he ran for office in 2008, but he has since soured on the president considerably.

“I’ve talked to a lot of people who worked for Obama at the grassroots level. One of them said to me, ‘Never again. I will never be fooled again by a politician,’” Damon told Elle magazine back in 2011. “You know, a one-term president with some balls who actually got stuff done would have been, in the long run of the country, much better.”

During a BET interview about his upcoming sci-fi thriller Elysium, Damon elaborated further on his disappointment in the president.

“He broke up with me,” he said. “There are a lot of things that I really question, you know: the legality of the drone strikes, and these NSA revelations they’re, you know, it’s like, they’re, you know, Jimmy Carter came out and said we don’t live in a democracy. That’s, that’s a little, that’s a little intense when an ex-president says that. So, you know, he’s got some, some explaining to do, particularly for a constitutional law professor.”

The outspoken actor also weighed in on the George Zimmerman trial, calling Trayvon Martin’s shooter “a novice.”

Click here to view the full interview with Damon.