Club for Growth, a top conservative group, on Tuesday came out against President Trump Donald John TrumpObama calls on Senate not to fill Ginsburg's vacancy until after election Planned Parenthood: 'The fate of our rights' depends on Ginsburg replacement Progressive group to spend M in ad campaign on Supreme Court vacancy MORE's call for Congress to consider bringing back earmarks.

“If Republicans bring back earmarks, then it virtually guarantees that they will lose the House," Club for Growth President David McIntosh said in a statement.

“Bringing back earmarks is the antithesis of draining the swamp. Earmarks will only benefit the special interests that grow government at the expense of working men and women.”

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Trump said Tuesday that Congress should consider bringing back earmarks to improve bipartisanship and pass more legislation.

“Maybe we should think about it,” Trump told a group of roughly two dozen lawmakers at the White House.

“Maybe all of you should think about going back to a form of earmarks. You should do it."

He said the "levels of hatred" among Republicans and Democrats are "out of control" and that earmarks could help solve it.

John Boehner Former Speaker(R-Ohio) banned earmarks, which have been derided as pork-barrel spending, after Republicans retook the House in 2010.