Pressure from President Donald Trump’s administration appears to be working. The Mexican government is cracking down on cartels.

Troops in Nogales, Mexico, have found 150 fentanyl pills, according to official statistics. Meanwhile, U.S. officials across the border have seized more than 400,000.

The White House announced on Monday that it will impose increased tariffs on China, citing the ongoing fentanyl crisis in the U.S. as the driving force behind the move.