Sen. Susan Collins Susan Margaret CollinsSenate GOP aims to confirm Trump court pick by Oct. 29: report The Hill's Campaign Report: GOP set to ask SCOTUS to limit mail-in voting Senate GOP sees early Supreme Court vote as political booster shot MORE (R-Maine) said she’s “surprised” and “appalled” by the Trump administration’s decision to argue in court that the Affordable Care Act should be thrown out, according to Axios.

Collins told Axios she intended to write to Attorney General William Barr Bill BarrProsecutor says no charges in Michigan toilet voting display Judge rules Snowden to give up millions from book, speeches The Hill's Morning Report - Sponsored by Facebook - Washington on edge amid SCOTUS vacancy MORE about the Department of Justice’s decision.

“I’m appalled," she told Axios. “I think the Justice Department has a duty to defend the duly enacted laws … I was surprised and disappointed. If the president disagrees with a law, then he should ask Congress to repeal or change that law. He should not try to get rid of it through the courts.”

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“This is something I vehemently disagree with, and I hope that the courts do not go along with what the Justice Department has requested,” Collins told News Center Maine. “This is many times worse because now the Justice Department is trying to strike down the entire law, rather than trying to invalidate just provisions that the Department views as unconstitutional.”

Collins, who is up for reelection next year, has already been a target of health care advocacy groups after voting to confirm Justice Brett Kavanaugh Brett Michael KavanaughOvernight Health Care: US coronavirus deaths hit 200,000 | Ginsburg's death puts future of ObamaCare at risk | Federal panel delays vote on initial COVID-19 vaccine distribution Senate GOP sees early Supreme Court vote as political booster shot Trump says he'll make Supreme Court pick on Saturday MORE to the Supreme Court last year. Collins argued in justifying her vote that Kavanaugh would be unlikely to vote to terminate protections for pre-existing conditions.

"In a dissent in Seven-Sky v. Holder, Judge Kavanaugh rejected a challenge to the ACA on narrow procedural grounds, preserving the law in full,” Collins said in a floor speech announcing she would support his confirmation. “Many experts have said his dissent informed [Chief] Justice [John] Roberts’s opinion upholding the ACA at the Supreme Court."