Fox News legal contributor reacts to House Republicans calling for the FBI to investigate former Rep. Liz Cheney for ‘witness tampering’ in the Jan. 6 investigation as President Biden reportedly considers preemptive pardons before leaving office. Fox News legal contributor reacts to House Republicans calling for the FBI to investigate former Rep. Liz Cheney for ‘witness tampering’ in the Jan. 6 investigation as President Biden reportedly considers preemptive pardons before leaving office.