The brief, filed in the US Court of Appeals for the 9th Circuit, included other top tech firms including Facebook, Twitter and Intel, as well as non-tech companies such as Levi Strauss and Chobani. In all nearly 100 firms, including eBay, Netflix and Uber signed onto the brief.
Trump's temporary immigration ban, the most contentious policy move of his first two weeks in offices, faces crucial legal hurdles.
His administration has a deadline on Monday to justify the executive order temporarily barring immigrants from seven mostly Muslim countries and the entry of refugees, after a federal judge in Seattle blocked it with a temporary restraining order on Friday.
