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President Donald Trump’s team opened its impeachment-trial defense in the Senate on Saturday morning. I was wrong about how the president’s lawyers would go about the job. I had suspected that they would use a tantrum to rally Republicans to their side, but it turned out that Republican Senators had their tantrum late Friday night when they chose to be outraged that the lead House impeachment manager, Representative Adam Schiff of California, referred to a (somewhat thinly sourced) news report that someone at the White House had threatened that Trump would have the “head on a pike” of any Republican who opposed him.