Taylor: There were 'regular' and 'highly irregular' Ukraine policy channels

William Taylor, the top U.S. diplomat in Ukraine, testified Wednesday that there were two policy channels with respect to Ukraine - one "regular" and one "highly irregular." He said the "official foreign policy of the United States was undercut by the irregular efforts led by Mr. Giuliani." Watch his remarks, made in his opening statement in the first public impeachment hearing.

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