A federal appeals court refused to block the Internal Revenue Service from sharing certain taxpayer information with the Department of Homeland Security for immigration enforcement, handing the Trump administration a significant legal win on Tuesday.

In a 35-page decision, the U.S. Court of Appeals for the District of Columbia Circuit ruled that immigrant advocacy groups failed to show they were likely to succeed in their challenge to the IRS data-sharing arrangement, affirming a lower court’s denial of a preliminary injunction.