Personal to Politico: You're wrong about the filibuster when you write:
Republicans are threatening even greater retaliation if Reid uses a move rarely used by Senate majorities: changing the chamber’s precedent by 51 votes, rather than the usual 67 votes it takes to overhaul the rules.As Ronald D. Rotunda of the Cato Institute has noted:
The Senate, unlike the House, is often called a continuing body because only one-third of its members are elected every two years. But that does not give the senators of a prior generation (some of whom were defeated in prior elections) the right to prevent the present Senate from choosing, by simple majority, the rules governing its procedure. For purposes of deciding which rules to follow, the Senate starts anew every two years.