Key facts
- USDA Secretary Sonny Perdue has resisted pressure to reopen the U.S. border to Mexican cattle.
- The border closure was implemented to prevent the spread of the New World screwworm pest.
- Officials believe the closure has successfully staved off an expected infestation.
- Some within the administration and industry argue for reopening the border, citing safe import conditions.
- The decision has created internal tension within the Trump administration.
USDA Secretary Sonny Perdue is facing internal pressure to reopen the U.S. border to Mexican cattle, a move she has resisted despite recommendations from some within the administration and industry groups. The border was closed last year to prevent the introduction of the New World screwworm, a pest that officials believe would have significantly increased beef prices had it arrived as anticipated by summer 2025.