“The message for Mr. Trump is the most straightforward: Enough. After months of watching the president ravage democratic norms and taunt lawmakers about their inability to hold him accountable, Congress is making clear that there are lines that cannot be crossed without repercussion.
Mr. Trump has long argued — and continues to argue — that impeachment will benefit him politically. Many Democrats, including Ms. Pelosi, have not disputed that possibility. Pressing ahead with the proceedings despite such political uncertainty conveys Democratic leaders believe matters have reached the point where the costs of inaction are simply too high.
Having the controversy over Mr. Trump’s dealings with Ukraine serve as the trigger for the formal inquiry sends a specific warning to foreign governments: America does not welcome, nor will it tolerate, the meddling of other nations in its elections. This is an especially crucial point to make in light of Mr. Trump’s seeming refusal to confront Russia about its interference in 2016 and his public comment in June that he’d be open to foreign assistance in 2020. House leadership is making clear that it will take extreme action to prevent another assault on the democratic process.