The Supreme Court has temporarily put on hold the release of redacted grand jury material from the Russia investigation to a House panel.
The Trump administration is trying to block the release.
Last October, a district court judge ruled the Justice Department had to turn over the materials, which were blacked out, from former special counsel Robert Mueller's report into Russian interference in the 2016 election.
An appeals court upheld the decision, but the Trump administration, hoping to keep the evidence secret, appealed to the Supreme Court.
Chief Justice John Roberts' order temporarily stops the process. Lawyers for the House Judiciary Committee have until May 18 to file their response to the Justice Department's attempts to keep the materials from the House panel.
The Justice Department had until Monday to turn over the material following the appeals court order. But on Thursday, the Trump administration asked the Supreme Court to block Congress from seeking it, saying, "The government will suffer irreparable harm absent a stay."