Someday in the future, when the causes of the Second American Revolution are discussed, at the top of the list might well be President Trump's decision to build a new White House ballroom. If you believe Jon Meacham, that is. On today's Morning Joe, panel regular and former Biden speechwriter Meacham began by warning the panel, and liberals at large, "Let's not bang on our high chairs here," i.e., let's not overreact to Trump's ballroom moves. But, ignoring his own advice, Meacham proceeded not merely to bang on his high chair, but to do the rhetorical equivalent of filling his...