Sen. Jon Tester Jonathan (Jon) TesterPence seeks to boost Daines in critical Montana Senate race This World Suicide Prevention Day, let's recommit to protecting the lives of our veterans Filibuster fight looms if Democrats retake Senate MORE on Thursday pushed back against President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE’s prediction that the Montana Democrat would pay a political price for helping to defeat Trump's nominee to head the Department of Veterans Affairs (VA), Adm. Ronny Jackson.

“It’s not political. I am focused on making sure that we have the best person possible to run the VA. It’s a very, very important agency,” Tester told reporters.

Tester said he wants Trump to nominate someone else who will “push back against the folks who are going to privatize the VA.”

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Trump is believed to have fired VA Secretary David Shulkin David Jonathon ShulkinVA inspector general says former top official steered M contract to friend Schumer demands answers in use of unproven coronavirus drug on veterans Former Trump VA secretary says staffer found plans to replace him in department copier MORE in part because he did not support efforts to privatize more of the agency’s mission.

Tester spearheaded resistance in the Senate to Jackson, the White House physician to the president, whom Trump tapped to head an agency with 36,000 employees and a $186 billion budget.

Jackson’s nomination raised concerns on both sides of the aisle because he previously managed a staff of only 70 people.

Tester struck a heavy blow against Jackson Wednesday by releasing a memo detailing allegations of Jackson’s unprofessional behavior at the White House, such as drunkenness and loose handling of prescription drugs.

Tester said on Thursday Jackson made the right decision by withdrawing his name from consideration earlier in the morning.

“I believe he did,” Tester said.

Tester faces a potentially tough reelection this year in a state Trump won by 20 points in 2016.

The president predicted in an interview on "Fox & Friends" Thursday morning that Tester "has a big price to pay in Montana.”