Comedian Craig Ferguson, host of the Late Late Show on CBS, is now a United States citizen.  He took and passed the U.S. citizenship test recently to garner citizenship.

The Late Late Show host has taken and passed—with a perfect score—his U.S. citizenship test, the Glasgow-born comic announced during Monday night’s show.

“Last Friday, I took the test, the citizenship test, and it’s very difficult by the way,” the 47-year-old said. “All you people born here, if you had to take that test, Canada would be building a fence right now.”

Ferguson will take the official oath of citizenship in the next couple of weeks.  He has been host of the Late Late Show since January 2005.