US President Donald Trump speaks at an event focused on infrastructure at the Edgar Hoover Dike on Lake Okeechobee in Florida [Nicholas Kamm/AFP] President Donald Trump has threatened to close the southern border of the United States or large sections of it next week if Mexico does not halt undocumented immigrants from reaching the border “immediately”. “It could mean all trade” with … Continue reading Trump threatens to close border with Mexico next week Trump repeats threat to close the US southern border – a move that if he acts on would anger Mexico and business groups.