Tito Ortiz got the ultimate rock star treatment at a U.S. Border Patrol station in Texas ... where agents lined up to take pics ... and even asked him to sign their handcuffs.
... all while sporting a Trump 2020 campaign shirt.
Tito's in McAllen, TX -- about 3 miles from the Mexico border -- for his big Combate Americas fight on Saturday with Alberto El Patron.
And with Ortiz being a very outspoken fan of Trump's immigration policies, he decided to meet with the people in charge of patrolling the area .