“These are not isolated incidents or clerical errors,” Dan Backer, a national campaign finance expert and president of the Coolidge Reagan Foundation, told The Post in a statement.

“This was a sustained pattern of foreign money flowing into a New York City mayoral race, which is a clear violation of both federal law and New York City campaign finance rules,” Backer noted further, per the outlet.

“Mamdani’s campaign was on notice for months that it was accepting illegal foreign contributions, and yet it did nothing meaningful to stop it.”

The Coolidge Reagan Foundation — which has previously filed complaints against Rep. Alexandria Ocasio-Cortez (D-N.Y.), Hillary Clinton’s presidential campaign, and the Democratic National Committee — called on Bragg and the Justice Department to investigate and potentially prosecute Mamdani