In this time of daily political norm-shredding, there's something immensely comforting about, well, normalcy. And really, nothing in American politics is more normal than Republicans passing a tax cut that strongly favors the wealthy and big business — or Democrats sputtering in furious opposition to it. We've gotten plenty of both over the last several weeks, as the House and Senate (and then the House again) have passed, and President Trump has prepared to sign, the Tax Cuts and Jobs Act. But there's something else normal, though far less reassuring, in the politics surrounding the passage of the tax bill.