The lack of action by the House is in itself a crime. Not pursuing impeachable offences, almost assuredly insures the fact that the next POTUS will not fear similar action. The reason for Impeachment is not so much punishment for the POTUS, but the clarification of constitutional rules that must not be broken by misuse of power, and the consequences for that action. To actually say that even though a POTUS has violated the constitution he will not be prosecuted is a breach in our trust of our leaders to the highest degree, as in treason.