Ex-President Joe Biden’s aides downplayed the migrant crisis as passing a “gallstone” to Mayor Eric Adams — and suggested he wasn’t being a “good Democrat” by voicing concerns, Hizzoner said in a bombshell new interview.

Adams, in a sit-down with former Fox News host Tucker Carlson that aired Tuesday, said he believes the Biden admin punished him for being vocal about the influx of asylum-seekers straining New York City resources.

“Be a good Democrat,” the mayor recalled being told.

“That was the basic overall theme,” he said. “[And] one of his aides told me that this is like a gallstone. It’ll pass.”

Adams told Carlson that when he first brought the issue to Biden and his aides, his concerns were brushed aside.

“It’ll hurt now, but it’ll pass,” he said he was told.

His own Democratic Party, the mayor said, has abandoned him and everyday New Yorkers.

“People often say, ‘Well, you know, you don’t sound like a Democrat and you seem to have left the party,’” Adams said.

“No. The party left me and left working-class people.”

The mayor, who has cooled on his backing of the city’s sanctuary status in recent months, noted that the Big Apple did not welcome the flood of migrants into the five boroughs.

“We have Venezuelan gang leaders that were coming to the city creating crimes,” he noted during the interview, which streamed online on the “Tucker Carlson Network.”

Adams — who faces federal bribery and corruption charges, which he denies — told Carlson that after his historic indictment in September, he wasn’t allowed to speak to Biden about the crisis.

“They wouldn’t allow the president to communicate with me,” he said.

“For whatever reason, there was little or no communication… And I was clear on that. I never told anyone I was going to do anything other than that I was going to fight for the city.”

Adams said he’ at a loss on how to deal with the crisis — which at its peak in early 2024 saw the city housing 70,000 migrants in taxpayer-funded shelters, with that number now standing at just below 50,000.

The mayor has stepped up calls for the sanctuary restrictions to be loosened so migrants suspected of serious crimes can be turned over to federal immigration agents — standard practice before the policies were implemented under ex-mayors Ed Koch and Michael Bloomberg.

But Adams has said he’s handcuffed on dealing with the migrant crisis, blaming the City Council, which controls the status, for not bending.

On Saturday, Adams said he would be unable to help President Trump carry out his promised mass deportation of illegal immigrants because of the city’s sanctuary status.

“The law is the law,” he said. “I answered that over and over again. I’m not going to keep doing the same question over and over again about the cooperation of city agencies.”

Trump has said he would consider pardoning Adams — who attended the 47th president’s inauguration in Washington DC on Monday.

Adams has received flak from city lawmakers — including the crowd of candidates challenging him in the June Democratic mayoral primary — for openly courting Trump.

His press secretary issued a statement Tuesday defending the Dem mayor’s decision to sit-down with the conservative commentator.

“Mayor Adams does not believe we should be living in silos and speaking into echo chambers,” Kayla Mamelak said in a statement.

“At a time where our country is so divided, the mayor believes we must break out of our comfort zones and speak with everyone – even those we may not always agree with.”