US President Donald Trump gave Mexico a year to stop the flow of illegal drugs and migrants across the southern border. If it fails to deal with these problems, the United States will impose tariffs on car imports, and if this does not work, he will close the border, CNBC reported.

"You know I will do it. I don't play games. ... so we're doing it to stop people. We're gonna give them a one-year warning, and if the drugs don't stop, or largely stop, we're going to put tariffs on Mexico and products, in particular cars. The whole ballgame is cars....and if that doesn't stop the drugs, we close the border," Trump told reporters at the White House.

"We welcome the President's decision not to close the Mexican border," said Neil Bradley, executive vice president of the U.S. Chamber of Commerce, in a statement Thursday. "Congress and the president should take this opportunity to enact border security and immigration reform. Congress should also ensure Customs and Border Protection officials receive the resources they need to reduce the excessive wait times affecting legitimate trade and travel across the border."

It is unclear whether Trump will continue to demand that Congress adopt a series of administration-supported immigration reforms.

Earlier this week, he said that if Congress does not do this, "the border will be closed."