A little noticed event earlier this week brought ominous tidings to the Trump 2016 campaign, which spent most of the summer riding high on a wave of triumphalism and defiance against the GOP establishment machine. Donald Trump held a campaign event in Iowa, and CNN didn’t even acknowledge that it was happening. Indeed, while the assembled crowd waited to hear the latest Trump Brand Pablum in person, even CNN’s chryon blared on about the huge crowds that were at that moment being drawn by … Bernie Sanders.