Sometime in the near future, Donald Trump’s attorneys will file a motion for a change of venue in the Jan. 6 conspiracy prosecution in Washington D.C. Authority to transfer a case to another district is found in Federal Rule of Criminal Procedure 21(a) which states that if a criminal defendant requests a transfer of venue and demonstrates that “so great a prejudice against the defendant exists in the [original] district that the defendant cannot obtain a fair and impartial trial there,” a court must transfer the defendant's trial to a different district.