WASHINGTON (AP) — The Supreme Court on Wednesday temporarily prevented the House of Representatives from obtaining secret grand jury testimony from special counsel Robert Mueller's Russia investigation.

The court's unsigned order granted the Trump administration's request to keep previously undisclosed details from the investigation of Russian interference in the 2016 election out of the hands of Democratic lawmakers, at least until early summer.

The court will decide then whether to extend its hold and schedule the case for arguments in the fall. If it does, it's likely the administration will be able to put off the release of any materials until after Election Day. Arguments themselves might not even take place before Americans decide whether to give President Donald Trump a second term.

For justices eager to avoid a definitive ruling, the delay could mean never having to decide the case, if either Trump loses or Republicans regain control of the House next year. It's hard to imagine the Biden administration would object to turning over the Mueller documents or House Republicans would continue to press for them.

House Speaker Nancy Pelosi objected to the high court's decision in a statement Wednesday evening. "The House's long-standing right to obtain grand jury information pursuant to the House's impeachment power has now been upheld by the lower courts twice," Pelosi said. "These rulings are supported by decades of precedent and should be permitted to proceed."

The federal appeals court in Washington ruled in March that the documents should be turned over because the House Judiciary Committee's need for the material in its investigation of Trump outweighed the Justice Department's interests in keeping the testimony secret.

Mueller's 448-page report, issued in April 2019, "stopped short" of reaching conclusions about Trump's conduct, including whether he obstructed justice, to avoid stepping on the House's impeachment power, the appeals court said.

The committee was able to persuasively argue that it needed access to the underlying grand jury material to make its own determinations about the president's actions, the court said.

The materials initially were sought last summer, but by the time the appeals court ruled in March, Trump had been impeached by the House and acquitted by the Senate.

The Justice Department said in its Supreme Court filings that the court's action was needed in part because the House hasn't given any indication it "urgently needs these materials for any ongoing impeachment investigation."

The House had opposed the delay on the grounds that its investigation of Trump was continuing, and that time is of the essence because of the approaching election. The current session of the House will end Jan. 3, and lawmakers elected in November will take their seats.

The committee investigation "continues today and has further developed in light of recent events," the House told the justices, citing the "possible exercise of improper political influence" on decisions to seek a shorter prison term for Trump confidant Roger Stone and end the prosecution of former national security adviser Michael Flynn, despite his two guilty pleas.

Pelosi said Wednesday: "The Justice Department's continued delay is part of a pattern of the Administration hiding the truth from the public. The American people deserve the truth."

The case is one of several ongoing court disputes between the Trump administration and Congress.

The Supreme Court heard arguments last week over whether Trump's accountants and banks must turn over financial records to House committees. The administration is not a party to the case, but is backing the president.

The appeals court also is weighing whether former White House counsel Don McGahn must appear before the committee to answer questions related to the Mueller investigation. And the Justice Department has said it will ask the Supreme Court to step in and kill a lawsuit alleging that Trump is illegally profiting off the presidency through his luxury Washington hotel.

Mueller's report detailed multiple interactions between the 2016 Trump campaign and Russia, and examined several episodes involving the president for potential obstruction of justice. Mueller said his team did not find sufficient evidence to establish a criminal conspiracy between the campaign and the Kremlin to tip the election, though pointedly noted that he could not exonerate the president for obstruction.

Portions of the report were blacked out, including grand jury testimony and material that Mueller said could harm ongoing investigations or infringe on the privacy of third parties.

Grand jury testimony is typically treated as secret, in part to protect the privacy of people who are not charged or are considered peripheral to a criminal investigation. But several exceptions allow for the material to be turned over, including if it is in connection with a judicial proceeding.

Lower courts agreed with lawmakers that impeachment is considered a judicial proceeding, rejecting Justice Department arguments to the contrary.