These critics [like Heritage Action and the Club for Growth] portrayed the Boehner plan as a sellout because of a campaign that captured the imagination of some conservatives this summer: Republicans must threaten to crash their Zeros into the aircraft carrier of ObamaCare.

From: http://www.news-medical.net/news/20130918/Viewpoints-WSJ-says-GOP-kamikaze-defunding-mission-will-not-go-well3b-taxing-Medicare-benefits3b-problems-with-Penn-States-wellness-program.aspx