johnson amendment是不讓任何免稅的組織用納稅人的錢去幹政治。sierra club 就是這麽一個組織。

https://sierra.secure.force.com/donate/rc_connect__campaign_designform?id=70131000001DlRtAAK&formcampaignid=70131000001LjZ2AAK&ddi=N16MOTF006&_ga=1.239166923.910671926.1486150861#!form=00P3100000TYKIcEAP

http://video.foxnews.com/v/5308739060001/?#sp=show-clips