Pro-mass immigration GOP megadonor billionaires the Koch brothers are now committed to working against President Trump’s two leading populist issues: immigration and trade.

In a statement to CNBC, the president of the Koch brothers-funded Americans for Prosperity announced that the Kochs’ network of organizations would be fighting against Trump’s proposed 25 percent tariff on imported steel and ten percent tariff on imported aluminum.

Tim Phillips, president of the Koch Brothers-backed Americans for Prosperity, noted that Trump narrowly won in Iowa and Wisconsin, two heavily rural states that could suffer if countries put in retaliatory tariffs on American agricultural goods. “It hurts the administration politically because trade wars, protectionism, they lead to higher prices for individual Americans,” Phillips said. “It’s basically a tax increase.”

Likewise, the Koch brothers have been ardent opponents of Trump’s popular pro-American immigration agenda, which has secured history-making wage growth for American workers in the construction industry, the garment industry, for workers employed at small businesses, and for black Americans.

Trump’s effort to reduce legal immigration, wildly popular with GOP voters and black Americans, is also opposed by the Koch brothers, who prefer the Washington, D.C.-imposed cheap labor economic model of importing more than one million legal immigrants a year to provide a never-ending flow of inexpensive workers to businesses while also keeping U.S. wages down.

“We just need to know there’s going to be no reduction to legal immigration,” president of the Koch-backed LIBRE Initiative, Daniel Garza, previously said.

Spokesperson for the Koch brothers says its crucial to continue inflow of admitting more than one million mostly low-skilled legal immigrants every year: "We just need to know there’s going to be no reduction to legal immigration." https://t.co/411hsTDvUk — John Binder 👽 (@JxhnBinder) March 2, 2018

The Koch brothers now join forces with House Speaker Paul Ryan and establishment consultants like Karl Rove who are advocating against Trump’s proposed protective tariffs, as Breitbart News reported.

At the core of the argument against Trump’s tariffs is the claim that American consumers will be hit with skyrocketing product prices.

Trade expert and White House adviser Peter Navarro, though, has debunked the claims coming from the free trade absolutism wing of the Republican Party, calling it a “bunch of horse-puckey,” in an interview with Breitbart News Saturday.

He said that the ten percent tariff on aluminum would only raise the cost of a six-pack of beer by about a cent-and-a-half and would only raise the construction cost of a $330 million 777 Dreamliner by about $25,000. “There’s virtually no downstream effects, despite what the pundits might be saying on TV, and it’s all good for the aluminum industry,” he said. … “I think the record is clear on these free trade agreements. They always are done with promises for significant jobs for Americans and significant access to markets, and we always lose dramatically once the ink is signed,” he said.