The measure, which passed with bipartisan support and minor changes, now heads back to the House. It is just the second legislative victory for the new Republican-controlled Congress.

The Senate passed the HALT Fentanyl Act Friday aimed at closing loopholes exploited by drug traffickers. The bill gained approval from 84 senators, while 16 voted against it.

Senate Republicans handed President Donald Trump a victory in the administration’s fight against the fentanyl epidemic with the passage of legislation that imposes steep penalties on smugglers caught moving fentanyl analogs into or throughout the United States.