President Donald Trump's decision to impose tariffs on steel and aluminum goods from the Canada, Mexico and the European Union is already under siege from the powerful political network funded by conservative billionaire donors Charles and David Koch.
In a statement first given to CNBC, the influential Koch network, which is known for supporting Republican causes, denounced the decision to implement the tariffs, urging the White House to "abandon" similar policies.
"Trade barriers make Americas as a whole poorer and they especially harm those already disadvantaged," said James Davis, a spokesman for the Koch network. "Trade wars hurt everyone. They trigger retaliatory tariffs from our trade partners and that raises prices on American families who need affordable access to household goods. We urge the Trump administration to abandon these tariffs."
The group has historically been against tariffs, with the belief that the United States should continue to be open to trade and to keep the doors open to allies. In April, the Koch network broke with Trump over tariffs targeted against Chinese goods.