Trump campaign zeroes in on a new threat: Elizabeth Warren

President Donald Trump’s reelection machine is setting its sights on a new target, one it had left for dead just a few months ago: Elizabeth Warren.
With the Massachusetts senator rising in polls and driving a populist message that threatens to cut into the president’s blue-collar base, the Trump campaign is training its firepower on Warren with an eye toward blunting her momentum. Trump aides and their allies at the Republican National Committee, who initially believed their money and manpower were better focused elsewhere, are digging up opposition research,...