It was awesome this week to watch Donald Trump in action - or, more accurately, inaction.Clearly stung by Michael Wolff’s true portrayal, in “Fire and Fury,” of a guy whose sole core conviction is himself, a guy of limited intellect who knows squat about policy, Trump invited the media to watch him preside over a White House confab on immigration with congressional leaders. He got a few good reviews, because at this point the bar is so low that if he stays semi-attentive for 55 minutes without tweeting or drooling, somebody inevitably concludes that This Was The Moment When He Became President of the United States.But the camera doesn’t lie. It was glaringly obvious that on the issue of immigration, mostly notably the future of the 700,000 dreamers (the undocumented immigrants who came to America as kids), the very stable genius has no idea what he believes.