The framers were concerned that any process whereby the Legislative Branch – the branch they deemed ‘the most dangerous’ – whereby the legislative branch could sit in judgement of a president who would be vulnerable to the abuse of partisan factions,“They feared that this most dangerous branch could sit in judgment of a president and would be vulnerable to abuse by partisan factions.”
“So the Framers were fully aware that the impeachment process could become partisan attacks on the president, charged with animosity generated by all manner of prior struggle and disagreements over executive branch decisions, over policy disputes, over resentment of losing the prior election, and God only knows what else,”
The Founders specifically targeted the legislative branch, knowing that partisan politics could be used “to overturn the will of the American people.”
“Instead of them writing about warning about the abuse of power by the president requiring impeachment, they wrote about and were concerned about and more debate was conducted about the abuse of power by political factions in the Legislative Branch to overturn the will of the American people.”