A trial judge raised the possibility that another federal judge overseeing Michael Flynn's case could find that President Donald Trump's pardon of Flynn is too broad, if it unlawfully protects the former national security adviser from future prosecutions.

U.S. District Judge Reggie Walton said at a hearing Friday that he doesn't think U.S. District Judge Emmet Sullivan, his colleague presiding over the Flynn case, "has a lot of options in reference to what he does" after the pardon was granted, "unless he takes the position that the wording of the pardon is too broad, in that it provides protections beyond the date of the pardon."