Trump ignored the rule of law, eroded nonpartisan safeguards and followed the dictator’s playbook to weaponize law enforcement against me and others. Almost 50 years ago, John Dean warned of “a cancer on the presidency.” For the past four years, the cancer was the president. Donald Trump had no regard for our laws, our system of justice or our democracy itself, and he was fine with destroying all of them if it served his personal purposes. The revelation that Trump’s Justice Department secretly seized phone and email data from his critics, his perceived political enemies and people whose loyalty he doubted — including me — fits a bigger pattern of abusing the rule of law for personal gain. Trump systematically eroded nonpartisan safeguards designed to prevent abuses of power. Remember, he pardoned or commuted sentences of his felonious cronies Roger Stone, Paul Manafort and Michael Flynn; in Flynn’s instance, his Justice Department earlier had moved to abandon the case, even after Flynn had twice pleaded guilty.