The House Freedom Caucus has shown conservatives the far-right can have an impact on the legislative process. But don't expect a similar group to spring up in the Senate; they already have one. Sort of. It's not that senators are less conservative — Republicans such as Ted Cruz of Texas, Jim Risch of Idaho or Jeff Sessions of Alabama would attest to that. And it's not that Majority Leader Mitch McConnell, R-Ky., is so much better liked than his former counterpart who was chased into retirement by the Freedom Caucus, Speaker John A. Boehner, R-Ohio.
Perhaps the main reason a Freedom Caucus is less likely in the Senate is attributable to the institution itself: Senators need to work together to get things done, but unlike House lawmakers, senators don't need a coalition to block things. If a key power of the Freedom Caucus is veto power over legislation, senators can erect procedural hurdles on their own.