Secretary of State Marco Rubio on Thursday announced the U.S. is pausing all employment visas for commercial truck drivers, an escalation of Transportation Secretary Sean Duffy’s effort to strictly enforce English proficiency standards on truck drivers in the name of safety.

The US will stop issuing worker visas for commercial truck drivers, Secretary of State Marco Rubio said, the latest in a series of Trump administration moves to clamp down on foreign workers.

The U.S. will stop issuing worker visas for commercial truck drivers, Secretary of State Marco Rubio announced Thursday.