President Trump is playing a major role in shaping the Republican tax plan. So what is a businessman who ran as a populist fighting for? Also, the president shared videos on Twitter from a fringe ultranationalist group, and the move was condemned by the British prime minister. Guests: Jim Tankersley, who covers taxes and the economy for The Times; Dan Bilefsky, a Times reporter based in London. For more information on today’s episode, visit nytimes.com/thedaily.

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