President Donald Trump threatened to use the military to close the border with Mexico in an attempt to block a migrant caravan from trying to enter the U.S.

Trump’s comments came in a series of tweets on Thursday.

The president wrote: “I am watching the Democrat Party led (because they want Open Borders and existing weak laws) assault on our country by Guatemala, Honduras and El Salvador, whose leaders are doing little to stop this large flow of people, INCLUDING MANY CRIMINALS, from entering Mexico to U.S….

“….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!..

“….The assault on our country at our Southern Border, including the Criminal elements and DRUGS pouring in, is far more important to me, as President, than Trade or the USMCA. Hopefully Mexico will stop this onslaught at their Northern Border. All Democrats fault for weak laws!”

Meanwhile, Mexico has sent two planes filled with federal police to its border with Guatemala to intercept the caravan, made up of an estimated 4,000 people, USA Today reported.