Trump's verbal assault followed one of those infamous semi-annual Koch retreats of wealthy donors over the weekend, this time at the 5-star Broadmoor hotel and resort in Colorado Springs. More recently, however, it has been sharply critical of his actions on trade issues and immigration.
The pair have championed free trade and have launched a multimillion-dollar campaign to oppose Trump's tariffs, which have targeted China, Canada, Mexico and the European Union, among others.
Trump's animosity toward the Koch brothers, like so much of his anger toward conservative heavyweights, stems from the influential donors' pointed refusal to support him in the run-up to the 2016 presidential campaign. That could mean Republican candidates who seek to closely align themselves with Trump on trade are forgoing backing from groups like the Koch network.
Trump's latest attack on Koch plays off his previous one, in which he called him a "globalist".
Various Republicans, including Trump himself, have warned that Democrats will move to impeach him if they gain a majority in the House in November.
Mr. Koch, at Republican conference with donors Sunday, spoke to MSM reporters about President Trump's trade policies. "I never sought their support because I don't need their money or bad ideas", Trump wrote in a post on Twitter.
The Kochs' influence has been powered by their fortunes from Koch Industries, the second-largest privately held USA company with operations in a range of sectors from refining and chemicals to ranching and forest products.
"We support policies that help all people improve their lives", James Davis, a spokesman for the Koch network, said in a statement.
Some Trump loyalists were furious at perceived contradictions in the Koch network's behavior and anxious that it could complicate the president's 2020 re-election. Trump's trade policy has always held the USA worker as more important than foreign workers, and seeks to return manufacturing and other industries to the US. "I have beaten them at every turn".
Among the GOP elected officials who attended the network's donor event were Governor Rick Scott of Florida, who's running for US Senate, Kentucky Governor Matt Bevin, Senator John Cornyn of Texas, Senator Tim Scott of SC, and Representative Marsha Blackburn of Tennessee, who's running for US Senate as a full-on backer of Trump.
Earlier this week, a conservative advocacy organization backed by the Koch brothers announced it would not support Rep.
"It was very disappointing to see yesterday that they are not going to support Kevin Cramer in this all too important North Dakota (U.S.) Senate race", said Ronna McDaniel, the chair of the Republican Party.
In line with their corporate interests, the Koch brothers mostly lobby for reducing taxes and federal spending, as well as low regulation oversight on businesses.
But once Trump took office, he appeared to have made peace with the Koch network.
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