The Koch-backed "grassroots" organization Americans for Prosperity received 86% of its funding in 2017 from just five big donors, according its recent audit filings.

The Koch-backed "grassroots" organization Americans for Prosperity received 86% of its funding in 2017 from just five big donors, according its recent audit filings. #TaxFilings #990s #KochBrothers pic.twitter.com/cVAbFwQlhJ

— Nick Surgey (@NickSurgey) November 16, 2018