Laurence Tribe: Trump committed ‘high crimes and misdemeanors’

09:15

Harvard Law Professor Laurence Tribe tells Lawrence O’Donnell that obstructing Congress from carrying out its duties to conduct an impeachment inquiry is an "impeachable offense." Professor Tribe also discusses the court ruling that Trump must release his tax returns, telling Lawrence that the federal appeals court issued a ruling so narrow that there is "no basis at all" for the Supreme Court to disagree.