I think among elites, everybody will be sitting at dinner tonight discussing Brexit. But if you look at the average American family having dinner, I don’t think they’ll be discussing Brexit.Mellman is trying to say Brexit won't affect the U.S. election outcome, and he's probably correct. The average American spends little or no time thinking about or traveling overseas. Even for those of us who are in Europe every couple of years, the experience of traveling there will not change appreciably.
However, Mellman misses the point, probably intentionally. The point isn't that Brexit will influence our election, but that the Brexit win is yet another example of the populist wave that resulted in Trump securing the Republican nomination here in the U.S.
Very similar concerns powered the victories of both Brexit and Trump: nationalism, unwanted immigration, unpopular policies in high places, and out-of-touch elites peddling globalism. With any luck, those populist concerns will take Trump to the White House.