“The Justice Department’s investigation found that from approximately Jan. 1, 2015, until approximately March 23, 2016, the Denver Sheriff Department discriminated based on citizenship status by requiring applicants for deputy sheriff positions to be U.S. citizens and publishing job postings with U.S. citizenship requirements, in violation of the Immigration and Nationality Act (INA). The INA’s anti-discrimination provision prohibits employers from limiting jobs to U.S. citizens except where the employer is required to do so by law, regulation, executive order or government contract. The Denver Sheriff Department was not subject to one of the INA’s exceptions.”