Bill Kristol, the former editor-in-chief of The Weekly Standard, is considering challenging President Donald Trump in the 2020 Republican primary. Kristol, who is consistently one of the most vocal anti-Trump Republicans, has been considering a run for months, a source familiar with Kristol’s thinking told The Daily Caller News Foundation. Kristol, who remains an editor-at-large for the Standard, said he has no plans to run but declined to rule it out when asked by TheDCNF. “No plans to run. But I’m randomly in Boston today, and happen to have had lunch with someone who does a lot of work in...