WASHINGTON — Federal investigators are looking at whether the Afghan national accused of shooting two National Guard members in broad daylight was radicalized after arriving in the US — despite clearing vetting by two different presidential administrations, a senior official told The Post.

Rahmanullah Lakanwal passed security reviews both when he entered the country following President Joe Biden’s disastrous withdrawal from Kabul in 2021 and again when he secured asylum under the Trump administration this past April. 

“You can vet what people have done in the past. You can’t vet what people might do in the future,” Secretary of State Marco Rubio told Fox News‘ “Hannity” in an interview that aired Tuesday night.

Authorities are homing in on what happened during Lakanwal’s four years in the United States that would motivate him to drive 3,000 miles from his home in Bellingham, Wash., and shoot two National Guard members in the head in a Thanksgiving eve ambush steps from the White House. 

Lakanwal, 29, yelled “Allahu Akbar!” before firing his gun at the soldiers from West Virginia who were protecting the nation’s capital, according to a police report. He’s charged with murdering Specialist Sarah Beckstrom, 20, and critically wounding Staff Sgt. Andrew Wolfe, 24. 

The Trump administration responded by closing down asylum applications, halting visas for Afghan nationals, and freezing immigration from at least 19 countries, with more nations likely to be named.

Still, federal officials are signaling that Lakanwal underwent a murderous change that vetting wouldn’t necessarily have picked up.

“We believe he was radicalized since he’s been here in this country,” Homeland Security Secretary Kristi Noem said Sunday on NBC’s “Meet the Press.”

“We do believe it was through connections in his home community and state, and we’re going to continue to talk to those who interacted with him.”

Lakanwal was shot multiple times by another National Guard member responding to the ambush. He pleaded not guilty through an interpreter from his hospital bed during a video-linked Tuesday court appearance, claiming he was in too much pain to open his eyes. 

Rubio told Fox News host Sean Hannity on Tuesday night that some new immigrants may “have no history of radicalization — perhaps they even have worked with you in the past — but they are susceptible to radicalization once they enter the United States.”

During the war in Afghanistan, Lakanwal worked alongside the CIA for a so-called “Zero Unit” force, a paramilitary unit labeled a “death squad” by human rights groups for its brutality.

He entered the United States on Sept. 8, 2021, through the Biden-era program called Operation Allies Welcome program to resettle Afghans after the fall of Kabul to the Taliban. 

Lakanwal “had no criminal history — nothing,” making him nearly impossible to flag, a former senior intelligence official told The Post. 

“We still don’t know why he snapped,” the person added.

News reports have noted that Lakanwal, a father of five, was under financial stress because his work permit had expired and he could have been suffering from a mental health crisis.

An Afghan commander whom Lakanwal highly regarded also recently died, per ABC News, potentially causing further strain.

The Daily Beast reported this week that investigators were looking at the possibility that a Taliban hit squad had threatened to murder Lakanwal’s family in Afghanistan unless he attacked American troops in the nation’s capital.

The Post could not independently verify that claim and the FBI declined comment, citing the ongoing investigation.