Arrests of people trying to cross illegally into the U.S. from Mexico plunged to the lowest level since 1971, as fewer people attempted the trek, the Department of Homeland Security announced Tuesday.
Meanwhile, immigration arrests in the interior of the country increased by 25 percent, the data show.
The newly released data provides the most comprehensive look yet at how immigration enforcement is changing under the Trump administration.
The dramatic shift in arrests of undocumented immigrants from the Southwest border to the interior of the nation continues to be a prominent feature of the Trump presidency.
"Overall, removals are down because the border's under better control than it has been in 45 years," said Tom Homan, acting director of Immigration and Customs Enforcement.