Those who don't agree to, or accept reasonable compromises, are undeserving to serve in Congress or the Presidency.

A major reason why Tea Partiers have faced "setbacks" is many don't understand and accept the nature of US democracy which is the joining of principles to a political process that never produces 100% of what one side wants on any contested issue i.e., neither the majority nor the minority party gets 100% of what they want. Throughout the history of US democracy, compromise is the reason legislation on contested issues passes Congress and is signed into law by Presidents. Politicians like many Tea Partiers who don't agree to or accept reasonable compromises are undeserving to serve in Congress or the Presidency.