Elizabeth Warren has been attacking Trump lately: [Excerpt] The night of Donald Trump’s big Indiana Republican primary win, Sen. Elizabeth Warren, D-Mass., was ready. She tore loose with a series of late-night anti-Trump tweets in which she accused him of racism, sexism, xenophobia, narcissism and a host of other faults. Two weeks earlier, after being asked about another Warren tweet storm in which she accused him of being "a loser," Trump fired a warning shot across Warren's bow. "Who's that, the Indian? You mean the Indian," he responded, referring to a well-known political controversy over Warren claiming Indian heritage. The...