President Trump Donald John TrumpBiden says voters should choose who nominates Supreme Court justice Trump, Biden will not shake hands at first debate due to COVID-19 Pelosi: Trump Supreme Court pick 'threatens' Affordable Care Act MORE said in an early morning tweet on Thursday that he is "bringing out the military" to secure the border with Mexico, calling it a "National Emergency."

"Brandon Judd of the National Border Patrol Council is right when he says on @foxandfriends that the Democrat inspired laws make it tough for us to stop people at the Border," Trump tweeted. "MUST BE CHANDED [sic], but I am bringing out the military for this National Emergency. They will be stopped!"

Brandon Judd of the National Border Patrol Council is right when he says on @foxandfriends that the Democrat inspired laws make it tough for us to stop people at the Border. MUST BE CHANDED, but I am bringing out the military for this National Emergency. They will be stopped! — Donald J. Trump (@realDonaldTrump) October 25, 2018

Trump tweeted last week that he would use the military to stop a caravan of migrants from Central America, which has reportedly swelled beyond 7,500, if Mexico did not stop it.

"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!" Trump tweeted.

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He said Wednesday night at a rally in Wisconsin that the "military are ready" to help secure the border against the caravan, according to NBC News.

The Mexican ambassador to the U.S., Gerónimo Gutiérrez, said Monday that Mexico will continue to work to halt illegal immigration into its country and work with the Trump administration to block the caravan from passing into the U.S.

Pentagon spokesman Capt. Bill Speaks told The Hill that the military is working through the logistics and is monitoring the situation at the border closely.

"At this time, I can only confirm that the Department of Defense continues to monitor events along the Southwest U.S. border, including the status of the migrant caravan heading north through Mexico," Speaks wrote in an email.

"We anticipate receiving a request for assistance (RFA) from the Department of Homeland Security and are currently working with DHS to determine the specifics of our support to Customs and Border Protection (CBP)."