Dems' point person for impeaching Trump won the last Senate impeachment trial

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Congressman Adam Schiff was the lead prosecutor for the 2010 impeachment of a federal judge, the last impeachment case to go to trial in the U.S. Senate. The judge was convicted by an overwhelming margin. Former U.S. Senator Claire McCaskill, who judged that trial, joins Ari Melber to share her memories of Schiff’s approach to the case.