johnson amendment是不让任何免税的组织用纳税人的钱去干政治。sierra club 就是这么一个组织。

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