Federal authorities have used checkpoints around the nation's capital to screen vehicles, sometimes asking people for their immigration status after stopping them, as President Donald Trump's crackdown reaches the two-week mark in Washington.

In a recent op-ed published in USA Today, Noem said zero illegal immigrants entered the country in May, June and July, and gave credit, in part, to department agents. In less than two weeks, U.S. Immigration and Customs Enforcement received over 100,000 applications from Americans seeking to join the agency.