Just a day after backing off a threat to close the southern border , President Trump has issued a new threat.

Thursday , Mr. Trump threatened to put a tariff on cars coming into the United States from Mexico. He said that if Mexico doesn't do enough to prevent illegal immigration he will enact the fee. He said that he would give Mexico one year to stop illegal immigration before he follows through with the threat. 

Mr. Trump will fly into Naval Air Facility El Centro on Friday and visit the border in Calexico. Earlier , the President had threatened to close the southern border.