https://www.commondreams.org/news/2018/01/24/after-spending-20-million-pass-goptaxscam-koch-bros-save-more-1-billion-year
"The Koch groups spent over $20 million promoting the tax bill that ultimately became law, according to a fact sheet they provided to the Wall Street Journal. Their efforts included town halls, door-to-door canvassing, and television ads—not to mention direct lobbying—in favor of the tax cuts. Now that the bill is law, they’ve pledged to spend millions more promoting it to the public in an effort to protect the members of Congress who voted for it."
