GEORGE WILL: There's no limiting principle in the principle that they're invoking, that is majorities should rule all the time. What this means is if in the spring of 2017 there is a Republican president, which there could be, the Republicans still hold the House and they have 51 Senators, they can repeal Obamacare with 51 votes. And I'm not sure the people who did this today have thought this through.