A sharp drop in illegal border crossings along the Southwest border that started in January after the Biden administration announced stricter immigration measures continued into February, the administration announced Wednesday.

The data released by the U.S. Customs and Border Protection paints a picture of who is attempting to enter the country at a time of intense political controversy with Republicans seeing immigration as a potent issue with voters and accusing President Biden and Homeland Security Secretary Alejandro Mayorkas of not doing enough to secure the southern border.

U.S. Border Patrol officials encountered migrants 128,877 times trying to cross the border in February between the legal border crossings. That’s about the same as January’s number — 128,913 — and is the lowest number of encounters per month since February 2021, the agency said.

The numbers of encounters doesn’t necessarily equate to individual people since some migrants try repeatedly to cross the border. The agency said about 25% of those encountered in February were repeat encounters meaning that at some time during the last 12 months they’d been detained by U.S. officials as they tried to enter the country.