Social media users are claiming a video shows US soldiers, military vehicles and drones patrolling a walled-off section of the southern border with Mexico after President Donald Trump declared a national emergency and dispatched additional troops to crack down on illegal immigration.

Washington — President Trump invoked muscular presidential powers to begin a sweeping crackdown on immigration following his inauguration on Monday, tasking the military with border enforcement, moving to designate cartels and gangs as terrorist groups, shutting down asylum and refugee admissions and attempting to terminate birthright citizenship.