Audio of former President Joe Biden‘s October, 2023 interviews with special counsel Robert Hur leaked Friday, revealing more insight into the ex-president’s memory lapses about important information.

The audio fed into ongoing Republican efforts to portray Biden as mentally unfit for the presidency at the end of his term and to allege that Democrats hid that fact from the public. “Coverup of the century,” Tennessee Rep. Andy Ogles said in a social media post on X. “Reminder: this is the same guy who had the nuclear codes.”