'Emergency': Mueller vet rebukes Trump’s AG for 2020 meddling

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Reports that AG Barr is encouraging prosecutors to lock up Seattle’s mayor and potentially compromising the upcoming election have caused Democrats to push for an “emergency investigation” into Barr. MSNBC’s Chief Legal Correspondent Ari Melber is joined by Mueller prosecutor Andrew Weissmann, who argues the issue is not Barr’s power, but “his exercising of his power in ways that are political.”