https://www.lawfareblog.com/self-dealing-ukraine-core-impeachment-inquiry
"Impeachment is only about removal of the president from office, not about criminal prosecution and imprisonment. So the standards and processes for impeachment are different. But it would be a mistake to ignore the criminal law entirely. Evidence of criminal misconduct, specifically, the federal bribery statute, should influence political judgments about impeachment. After all, “Bribery” is one of the grounds for impeachment specifically enumerated in the Constitution."