An impeachment inquiry is a formal process used by a legislative body, such as the U.S. Congress, to investigate whether a public official, like the President, has committed actions that warrant impeachment. This process typically involves gathering evidence, holding hearings, and questioning witnesses to determine if there are grounds for impeachment based on misconduct or violations of law. If the inquiry finds sufficient evidence, it may lead to articles of impeachment being drafted. These articles are then voted on by the legislative body, and if approved, the official may face a trial to decide whether they should be removed from office.