Federal gun charges against Hunter Biden should be thrown out because the special counsel appointed by the Biden administration to bring those charges is doing the will of former President Donald Trump and his allies, according to a court filing from Hunter Biden’s attorneys.

Hunter Biden has pleaded not guilty to a charge of lying about his drug use in October 2018 when he completed a federal form to buy a gun, according to The Associated Press.

The charge had been set to be resolved last summer as part of a plea deal that included the tax charges against Hunter Biden, but the plea deal collapsed.

U.S. Attorney David Weiss, who had led the investigation that resulted in the plea deal, was then appointed a special counsel to investigate the case and filed new indictments against Hunter Biden in December.