Trump threatens Mexico in tweet

President Donald Trump says he will stop Mexico's "cash cow" unless it does more to stop its people from crossing into the United States.

President Trump tweeted that Mexico is doing next to "nothing" to stop illegal immigration and laughs "at our dumb immigration laws".

The president added that Mexico must "stop the big drug and people flows, or I will stop their cash cow, Nafta. Need Wall!"

Mexico is doing very little, if not NOTHING, at stopping people from flowing into Mexico through their Southern Border, and then into the U.S. They laugh at our dumb immigration laws. They must stop the big drug and people flows, or I will stop their cash cow, NAFTA. NEED WALL!

— Donald J. Trump (@realDonaldTrump) April 1, 2018

The United States, Canada and Mexico are currently renegotiating the North American Free Trade Agreement at President Trump's insistence.

President Trump says Nafta hurts the US.

President Trump promised during the presidential campaign to build a southern border wall to stop illegal immigration and drugs coming in from Mexico, but Congress has frustrated the president by not moving as quickly on the wall as he would like.

- PA