Thirty more US technology firms have signed a brief opposing President Trump's immigration ban, bringing the total number involved to 127.
The new signatories include Tesla, Adobe, HP and Evernote.
They join 97 others who have filed a legal document stating the ban "inflicts significant harm" on their businesses and is unconstitutional.
The amicus brief allows parties not directly involved in a case but who feel affected by it, to give a view.
It was filed in Washington on Sunday and also includes Apple, Facebook and Microsoft as signatories.
Mr Trump's executive order halted the entire US refugee programme for 120 days, indefinitely banned Syrian refugees and suspended permission to enter the US for all nationals from seven Muslim-majority countries.
There is currently a nationwide temporary restraining order in place, which was issued on Friday by a federal judge in Washington.
This means visa holders from Iraq, Syria, Iran, Libya, Somalia, Sudan and Yemen will be allowed to enter the US until the full case has been heard.
However, the president has said he will fight the order as it puts national security at risk.
"Of course, the federal government can and should implement targeted, appropriate adjustments to the nation's immigration system to enhance the nation's security," reads the tech group's brief.
"But a broad, open-ended ban - together with an indication that the ban could be expanded to other countries without notice - does not fit the goal of making the country more secure. Instead, it will undermine American interests."