In response to an 'immigration caravan' that head out from South America, US President Donald Trump Threatend to close the US-Mexico border if the carvan isn't stopped, writing:
"In addition to stopping all payments to these countries, which seem to have almost no control over their population, I must, in the strongest of terms, ask Mexico to stop this onslaught - and if unable to do so I will call up the U.S. Military and close our southern border!"