The number of migrants apprehended by U.S. Border Patrol after crossing into the United States from Canada dropped to its lowest level since 2022, according to statistics released by U.S. Customs and Border Protection (CBP) on Thursday.

In February, Border Patrol agents detained 481 individuals near the Canada-U.S. border, a decline from 616 in January and significantly lower than the multi-year high of 3,601 recorded in June last year. A CBP spokesperson did not immediately respond to requests for comment. However, an official previously informed Reuters that the agency had modified its enforcement approach regarding a bilateral agreement between the U.S. and Canada. This agreement allows both nations to turn back asylum seekers attempting to cross in either direction, contributing to the recent decline in crossings.

Despite the drop in southbound apprehensions, the number of migrants caught entering Canada from the United States has increased. According to Canada Border Services Agency data obtained by Reuters, Canadian authorities apprehended and turned back 126 individuals in February—the highest monthly figure in a year.

While Canadian law enforcement has limited authority over individuals crossing into the U.S., the Canadian government has tightened visa issuance policies in response to growing pressure to reinforce its border security. The issue has gained prominence as former U.S. President Donald Trump has linked migration and illicit fentanyl trafficking to justify imposing tariffs on Canada. In response, Canada has announced a C$1.3-billion border security initiative and appointed a fentanyl czar.

Meanwhile, U.S. authorities reported that illegal crossings at the U.S.-Mexico border in February were on track to be at or near a record monthly low.

Canadian officials have been preparing for a potential increase in northbound migration due to Trump’s repeated threats of mass deportations from the United States.