"They're all really good. You realize that they're senators, so
they're used to just walking around and just bullsh---ing, so they're
really good actors," Scott told "Jimmy Kimmel Live" on Thursday night.
Sens. John McCain (R-Ariz.), Olympia Snowe (R-Maine) and Barbara Boxer (D-Calif.) all filmed cameos for an episode of the sitcom returning to NBC on Sept. 20.
"He acts in it and he's really good," Scott said of McCain. "It was really an honor to meet him, he's like cracking jokes, he's like a grandfather that comes over and has right-wing attitudes."
McCain filmed the cameo in July and tweeted that he had a great time. "I think it's an Emmy!" he joked.
The actor also revealed that while he had been invited to President Obama's fundraiser in Beverly Hills this past summer, and flew back from New York City to attend, he never made it there.
"I was invited, along with a small group of actors and other people like me who don't deserve to meet the president to come out and meet him," he said. "I grew up in a family of proud Democrats, and I am a proud Democrat, so this was a big deal. ... I just remember getting in my car and ... thinking, 'I think this might be the biggest day of my life.' "
He said he drove a couple blocks and crashed into three parked cars at 6:30 in the morning.
"Instead of meeting the president, I was standing in the street wearing a ridiculous suit with three people in their pajamas who were absolutely furious with me," he said. "I had bragged about it to everyone."