Also, Trump could be impeached. He has already shown a lack of regard to the law and the Constitution. He is scandal-prone, and already historically unpopular. There are his conflicts of interest and other scandals. Allan Lichtman, the professor who predicted Trump's win based on his scientific model, has also predicted his impeachment.
Why does the fact that Lichtman's model has finally been discredited give him credence?
He predicted Trump's win, and so did other scientific, fundamentals-based models.