Ninety-seven companies, from Apple Inc. to Zynga Inc., filed an impassioned legal brief condemning President Donald Trump's executive order on immigration, stepping up the industry's growing opposition to the policy.

The amicus brief was filed late Sunday in the Ninth Circuit Court of Appeals and emphasizes the importance of immigrants in the economy and society. The companies originally planned to file the brief later this coming week, but accelerated efforts over the weekend after other legal challenges to the order, according to people familiar with the matter.

The participating technology companies include Airbnb Inc., Facebook Inc., Google, Intel Corp., Netflix Inc., Snap Inc. and Uber Technologies Inc. Companies beyond technology signed on as well, including Levi Strauss & Co. and yogurt maker Chobani LLC.