We've been had

Not sure how many of you may have been following the recent news about the digital data firm Cambridge Analytica, so first, a brief round-up: Cambridge Analytica (CA) is owned by Donald Trump’s biggest backer—well, no, that would be Russia; let’s say, then, his biggest American backer—Robert Mercer, who founded CA with Steve Bannon, Trump’s former guru and campaign manager. Mercer made a fortune a...