Hum, I think you misunderstood what I said. Right now the US is very attractive to entrepreneurs, and tax rates even in places like NYC are low compared to similar global metropolis (Paris, London, etc). Still, some rich people (a very tiny minority) already feel tempted to leave. Should an extremist like Sanders win and enact his dramatic tax hike, not to mention other anti-business policies, it's not far fetched to imagine entrepreneurs and people of mobile wealth would leave in great numbers, as they have left France (and Hollande's tax hike was smaller than the one Sanders dreams of). But, as usual on the Internet, we're just making our keyboards a little more beaten up. Because Hillary will win.