For Republicans, Trump’s Twitter attacks pose unprecedented political challenge

President Donald Trump concludes remarks to reporters during his meeting with Ukraine’s President Petro Poroshenko at the White House on June 20, 2017. Photo by Jonathan Ernst/Reuters For many Republicans in Congress, President Donald Trump’s vulgar outburst at a female journalist Thursday crossed the line. Yet as they expressed disappointment with the president for disparaging the physical appearance of MSNBC host Mika Brzezinski on Twitter, an all-too-familiar political reality for...

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