The anti-ICE gunman who killed one migrant and wounded two others at a Dallas ICE facility on Wednesday was once a pot-obsessed slacker who hustled marijuana from Washington back to his home state of Texas, according to his ex-boss.

Joshua Jahn, 29 — who fired from a rooftop at a busload of migrants escorted by federal agents into the immigration facility before turning the gun on himself — worked a short-lived job on a legal cannabis farm in Benton City in 2017, where his ex-employer remembered him as a weed-loving drifter with little direction or drive. 4

“He was all about the weed. He wanted to be part of the scene. He lived in his car while he helped,” Ryan Sanderson, 49, who runs Golden Leaf farm, told The Post.

“He was just a young kid. When the job was over, he drove bac

See Full Page