Former first lady Melania Trump delivered remarks Friday during a naturalization ceremony at the National Archives — as her husband faces criminal charges for having withheld presidential documents from the agency.

The Slovenia-born former model is just the second foreign-born first lady — next to Louisa, the London-born wife of former President John Quincy Adams — and the only one to become a naturalized US citizen, having emigrated to New York City on a worker visa in 1996.

“How fortunate to be with the naturalizing individuals and their families as they recite the Oath of Allegiance and become Americans before our great nation’s founding documents,”  Melania said in her remarks.

The Archives appearance comes six months after former President Donald Trump was hit with 37 counts of having allegedly retained sensitive national security papers at his Mar-a-Lago estate after leaving office.

The indictment followed a lengthy back-and-forth between Trump, 77, and the National Archives, which had repeatedly requested the former president return hundreds of documents beginning in May 2021.

Trump, along with his valet Walt Nauta, reviewed boxes containing the sensitive files and turned over some, but the Archives eventually referred the matter to the Justice Department after he failed to fully comply.

In January 2022, the 77-year-old ex-president sent 15 boxes of records to the National Archives, including 69 papers marked confidential, 98 marked secret and 30 marked top secret.

But hundreds more documents were still in Trump’s possession.

The former president lied to his lawyers and federal authorities when subpoenaed for the documents, the indictment alleges, ordering Nauta to conceal boxes in different rooms at the Palm Beach, Fla., resort.

On Aug. 8, 2022, FBI agents executed a search warrant at Mar-a-Lago and seized the remaining classified documents.

Nauta was also charged as a co-conspirator, along with a property manager who was allegedly told to delete security camera footage of their efforts to hide the materials from authorities.

Since then, Trump has also been hit with another federal indictment for attempting to overturn the 2020 presidential election results in Washington, DC.

Trump’s documents trial is scheduled to begin on May 20, 2024, despite efforts by his team to postpone it until after next November’s presidential election.

The 45th president remains the runaway front-runner for the 2024 Republican presidential nomination, leading the field by more than 47 percentage points, according to the RealClearPolitics polling average.

Friday’s ceremony marked a rare public showing for the former first lady, who has said she supports her husband’s campaign but has not yet been on the trail.

Melania, 53, also attended a memorial service for former first lady Rosalynn Carter last month in Atlanta.

The former first lady said Friday that becoming a US citizen comes with a great deal of responsibility.

“It means actively participating in the democratic process and guarding our freedom,” she told attendees. “It is a life-altering experience that takes time, determination and sometimes even tremendous strength.”

In his latest campaign for the White House, Trump has promised a return to hardline immigration policies if he wins the 2024 election.

Among his proposals, Trump wants to revive and expand his controversial travel ban, which initially targeted seven Muslim-majority countries, begin new “ideological screening” for all immigrants and end the constitutional right to birthright citizenship by signing an executive order on his first day in office.

That would only permit children with at least one US citizen or lawful permanent resident parent to be eligible for a passport, Social Security number and other benefits.

Friday’s ceremony featured 25 people from 25 nations being sworn in as new US citizens, surrounded by founding documents including the Constitution.

With Post wires.