“Americans for Prosperity Foundation (AFP) is an antitaxation advocacy group founded in 2004 and financed by David and Charles Koch, the billionaire brothers who own Koch Industries of Wichita, Kansas.”
Irrelevant. They are not on the Trump bandwagon so they are no better than Soros.
AFP is not for Donald Trump. AFP is not for Ted Cruz. AFP, AFAIK, is not pushing for any candidate in particular. Instead they push for things like the Constitution and the Rule of Law.
AFP is policy oriented, not politician oriented.