system in this country. we have civil litigation. and former presidents are not immune from being accountable by either one. >> trump did not need to be impeached. congress could acquit trump in the senate because the criminal justice system would take care of all of it later. that was the logic trump's lawyers and senate republicans relied on. today donald trump's lawyers went before the d.c. circuit court of appeals to argue the exact opposite. they argued trump cannot be prosecuted for anything he did as president and that the only way to prosecute a president for crimes committed durg his presidency is impeachment. >> i understand your position to be that a president is immune from criminal prosecution from any official act that he takes as president even if that action is taken for an unlawful or