The US Supreme Court issued an administrative stay allowing construction of Trump's proposed 90,000-square-foot White House ballroom to continue temporarily.
Trump has argued that the project is necessary for national security, while lower courts found that he overstepped his authority by proceeding without congressional approval.
The Trump administration says the project is authorised under a separate law, while Solicitor General John Sauer argues that construction is already 65% complete and difficult to alter at this stage.

