The conservative donor network helmed by billionaire brothers Charles and David Koch will launch a multi-year, multimillion-dollar to promote free trade and directly hit back at the Trump administration's broad tariffs on China, Canada, Mexico and European countries, according to Koch network official James Davis.

Why it matters: The Koch network, which many Republicans perceived had lost influence during the rise of Trump, remains the best-funded donor group on the right even as it opposes some of the core tenets of Trumpism. As Trump pushes his party towards protectionism and Republicans largely stay silent — with a few exceptions like senators Ben Sasse and Jeff Flake — the Koch network is filling a void by pouring millions into a campaign to promote free trade.