PITTSBURGH, Nov 4 (Reuters) - Republican presidential candidate Donald Trump warned on Monday that, if elected, he would punish Mexico and China with tariffs unless both governments moved to stop the flow of fentanyl into the United States.

At a campaign rally in Pittsburgh, Pennsylvania, Trump said he would move quickly to crack down on drug trafficking along the southern U.S. border with Mexico and that he would use tariffs. “We will immediately stop the drugs pouring across our border,” he said.

Trump said he would impose tariffs on goods from Mexico of 25% and would do the “same thing to China” for exporting fentanyl to Mexico. “Every damn thing that they sell into the United States is going to have like a 25% (tariff) until they stop drugs from coming in. And let me tell you something, those drugs will stop so damn fast that your head will spin,” Trump said.