Denver County’s sheriff office has been slapped with a fine by the Department of Justice because it refused to hire noncitizens as deputies.

From the beginning of 2015 through last March, the Denver Sheriff Department went on a major hiring binge, adding more than 200 new deputies. But those jobs ended up only going to citizens, because the department made citizenship a stated requirement on the job application. The department admitted as much in a new settlement with the U.S. government, which requires it to pay a $10,000 fine.