He's calling it a "big step".
Until we can have a wall and proper security, we're going to be guarding our border with the military.
Trump has railed against more than 1,200 Central American migrants on a 2,000-mile (3,200-km) journey from the Mexico-Guatemalan border, and reiterated threats to derail the North American Free Trade Agreement (NAFTA) if they are not stopped. He further added that he discussed the matter with U.S. Defense Secretary Jim Mattis.
Currently, officers with U.S. Customs and Border Protection enforce security within 100 miles of any point along the U.S. border, encompassing major cities along the southern border including San Antonio and El Paso in Texas; Las Cruces, New Mexico; Tucson, Arizona; and San Diego, California.
In a post on Twitter earlier on Tuesday, Trump said the caravan "heading to our "Weak Laws" Border, had better be stopped before it gets there".
The "caravan" of mostly Central American migrants making its way through Mexico reportedly stopped Monday at a local park, as the marchers decide where and when to proceed.
An analysis by KXAN local news in 2016 found that most border arrests by state troopers were for drunk-driving and minor drug violations, not the smuggling of people or drugs. The President had threatened to end the NAFTA agreement if the Mexican government did not stop the caravan and to end USA aid to Honduras. "We'll see what happens", he said. "Congress MUST ACT NOW!"More news: Mortal remains of 38 victims flown to India today
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US presidents have ordered National Guard forces to the border in the past.
In 2010, President Barack Obama sent some National Guard troops to the U.S.
They built infrastructure such as roads and fences and conducted surveillance on the ground and in the air, but left it to the border patrol to make arrests - because of the troops' lack of expertise in border enforcement and limits on the tasks that active duty military forces can perform domestically.
Trump had previously alluded to the use of the military on the border with a tweet about "M".
U.S. President Donald Trump on Tuesday inspected prototypes for his long-promised wall along the border with Mexico in a tour that drew both supporters and protesters.
Republican Representative Francis Rooney, a member of the Foreign Affairs Committee in the U.S. House of Representatives, said there was a risk of increased violence.
"The hard part, I think, is in front of us, and that is stabilizing these areas, consolidating our gains, getting people back into their homes", Votel said.