The dad of a 15-year-old Long Island girl murdered by MS-13 gang members last year says he “welcomes” US Attorney General Jeff Session’s visit Friday to the federal courthouse in Central Islip.

“He definitely needs to come out here to see what’s going on,” said grieving father Robert Mickens, whose daughter Nisa was hacked to death with a machete last September following a social media disagreement with MS-13 members.

Her best friend, 16-year-old Kayla Cuevas, was also killed, after being chased down by the gangbangers.

Mickens said Sessions should bring President Trump along with him to “see the violence for himself” and told The Post gang violence is “running rampant” in his community while local politicians turn a “blind eye.”

The dad also lashed out at Assemblyman Phil Ramos, who earlier in the day told reporters AG Sessions should “stay in Washington” unless he planned on bringing “resources for local nonprofits” during his visit.

“I’m concerned about this visit, given this administration’s record of turning situations like this into a political debate to justify anti-immigrant sentiment,” the assemblyman said.

“[MS13] killed my little girl,” Mickens raged. “If Mr. Ramos is saying [gang violence] this is not the main issue out here, he must be blind. The passing of my daughter has affected me and my family, but it’s clearly not affected him. And it’s obvious that he doesn’t care, because if he cared, he’d be out here.”

The vicious Salvadoran gang has a particular stronghold in Suffolk County, and previous reports have indicated that some of the accused killers had been deported following other convictions, but then sneaked back across the border before committing the double murder.

Sessions is slotted to address local, state and federal law enforcement regarding the continued violence carried out by the MS-13 gang, which is alleged to have murdered seven people in the last year across Long Island.