First lady Melania Trump demanded that Hunter Biden retract comments linking her to sex trafficker Jeffrey Epstein and threatened to sue if he does not.
Hunter Biden, 54, pleaded not guilty and says he belatedly paid all of his tax debts after regaining his sobriety in 2019, amid a lifelong struggle with alcoholism and drug abuse.
U.S. District Judge Mark Scarsi, in denying the motion, cited Hunter Biden's previous ill-fated efforts to dismiss the case.
Hunter Biden attempted to enlist support from the U.S. Ambassador to Italy in 2016 to arrange a business meeting on behalf of Burisma for a prospective energy deal, according to his attorney.
If true, the allegation would mark the closest prosecutors have come to tying President Joe Biden to his son's overseas business endeavors.
The president's son faces charges of unlawfully obtaining a firearm.
