Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. History Shows Impeachment Battles Risky and Unpredictable Jim Malone WASHINGTON - President Donald Trump made history this past week, but not the kind he had hoped for. Trump is now the fourth U.S. president to become the subject of an impeachment inquiry, the U.S. constitutional process whereby Congress may remove a president from office. But if history is any guide, both sides should take note that the politics of impeachment are complicated and risky, and the eventual outcome and fallout are often hard to predict. What is clear from the past several days is that Donald Trump is now fully engaged in a battle to save his presidency. "What these guys are doing, Democrats, are doing to this country is a disgrace and it shouldn't be allowed," Trump told reporters Thursday. "There should be a way of stopping it. Maybe legally through the courts." .