Former President Donald Trump has asked the Supreme Court to weigh in on the dispute over materials marked classified that the FBI seized from his Mar-a-Lago residence this summer.

His emergency request to the Supreme Court is the latest example of the former president seeking to engage justices in investigations implicating him, at a time when the high court’s legitimacy in politically explosive cases is under intense scrutiny.

Trump specifically asks the court to ensure that the more than 100 documents marked as classified are part of the independent expert’s review. If the request is granted, he could strengthen the former president’s attempt to challenge the registration in court and have the documents returned to him.

Trump’s emergency request to the Supreme Court comes after an appeals court sided with the Justice Department and said the department’s criminal investigation into the documents marked classified could continue. The investigation’s use of the records had been put on hold by a Florida district judge, who granted Trump’s request for third-party review of material obtained in the Mar-a-Lago raid.

The appeal puts the Supreme Court back in the political spotlight.

Earlier this year, the former president asked judges to block the release of documents from his White House to congressional investigators about the attack on Capitol Hill. The high court rejected the request.

The Supreme Court, with its current conservative majority, is already viewed by the American public as partisan After a series of controversial rulings this year, including the reversal of Roe v. Wade, and will likely make the Mar-a-Lago raid an even bigger issue in the upcoming congressional midterm elections.

Trump named three of the current justices: Neil Gorsuch, Brett Kavanaugh and Amy Coney Barrett.