Trump's legal nightmare: Court rebukes 'king,' inside lawyer could be forced to testify

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President Trump has been hit with another major legal loss, as the second most powerful federal appeals court in the country sides with House Democrats in their bid to force testimony from a resistant veteran Trump aide. The ruling backs Democrats’ argument Trump’s attempt to defy Congress and block testimony is unconstitutional. MSNBC’s Chief Legal Correspondent Ari Melber breaks down Trump’s clashes with the rule of law.