The Supreme Court on Monday refused to hear a challenge to the legality of President Trump Donald John TrumpHR McMaster says president's policy to withdraw troops from Afghanistan is 'unwise' Cast of 'Parks and Rec' reunite for virtual town hall to address Wisconsin voters Biden says Trump should step down over coronavirus response MORE’s decision to name Matthew Whitaker acting attorney general.

The request came in a case, which the court also refused to review, disputing the constitutionality of the lifetime ban on felons owning guns when it’s applied to someone who served their sentence a long time ago and has since been a law abiding citizen.

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Attorneys for Barry Michaels, the Nevada man at the center of the Second Amendment case, argued that under the federal succession statute Senate-confirmed Deputy Attorney General Rod Rosenstein Rod RosensteinDOJ kept investigators from completing probe of Trump ties to Russia: report Five takeaways from final Senate Intel Russia report FBI officials hid copies of Russia probe documents fearing Trump interference: book MORE automatically became acting attorney general after former Attorney General Jeff Sessions Jefferson (Jeff) Beauregard SessionsTrump's policies on refugees are as simple as ABCs Ocasio-Cortez, Velázquez call for convention to decide Puerto Rico status White House officials voted by show of hands on 2018 family separations: report MORE stepped down in November, and that Whitaker’s appointment violated the Appointments Clause of the Constitution.

Thomas Goldstein, one of Michaels's attorneys, noted that Whitaker’s actions on anything from appointing immigration judges to overseeing special counsel Robert Mueller Robert (Bob) MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE’s Russia investigation could be challenged in court if his appointment is later found to be invalid.

“If this Court declines to resolve this question immediately and instead determines several months in the future that Mr. Whitaker’s appointment was always invalid, then ‘unwinding’ all of those personal orders would be a fraught and disruptive exercise that could embroil the federal courts in innumerable collateral disputes,” Michaels's attorneys wrote in a brief.

The justices denied review of both Michaels’s case and Whitaker’s role as acting attorney general in the case.

At least four justices are needed to agree to review a case.

Updated at 10:19 a.m.