Advertisement To the editor: Unlike the Republicans, the Senate Democratic caucus actually includes a wide range of viewpoints, from those of Bernie Sanders of Vermont to Joe Manchin of West Virginia. For this reason, radical legislation is not likely to pass. Manchin has, in effect, a one-man veto pen. And lest one forgets, President Biden has not signed on to the more far-left proposals. Had the Republicans shown any willingness to work with the Democrats, I’d have some reason to concede that we should keep the filibuster. Yet Minority Leader Mitch McConnell’s (R-Ky.) troops have show...