Trump fixation on exonerating Russia entangles Barr, Pompeo

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Rachel Maddow reports on Donald Trump's unusual fixation with finding reasons to undo sanctions on Russia for the annexation of Crimea and interference in the 2016 election, to the point where he is now reportedly sending Attorney General William Barr overseas to seek help in discrediting the U.S. intelligence community's conclusions about Russia's role in 2016.