One human smuggler who spoke to NBC News said the troops wouldn’t make a difference, but conceded stricter border policies had significantly cut into his business.

Mexican President Claudia Sheinbaum confirmed that Mexico's National Guard is en route to its border with the United States.

The leaders of Mexico and Canada have been willing to appease U.S. President Donald Trump to avoid tariffs on their products.

Mexico boosted troop levels at the border after President Trump threatened a tariff on all Mexican goods coming into the U.S. Gabe Gutierrez got exclusive access, and takes a look at whether or not the uptick in troops will impact the flow of illegal immigration and fentanyl into the U.