SAN FRANCISCO (Diya TV) — Tech companies from around the nation are joining forces with the government of Washington state to fight against the controversial immigration-related executive order President Donald Trump signed Friday.

Washington attorney general Bob Ferguson filed the lawsuit Tuesday against Trump’s order, which bans legal immigrants and refugees from seven Muslim-majority nations from entering the U.S. It also permanently bans Syrian refugees from entry.

Now, at least three tech companies — Amazon, Microsoft and Expedia — have joined in support of Ferguson’s efforts. A Microsoft spokesman told Reuters that the company is providing information about the effect of the order in order to “be supportive.” They also would “be happy to testify further if needed.”

Both Amazon and Expedia are preparing statements about how the president’s order carries a negative impact on their business. In an email to company employees, Amazon chief executive Jeff Bezos wrote that the company’s legal team “has prepared a declaration of support for the Washington State Attorney General who will be filing suit against the order.” Amazon is considering a multitude of legal options.

The lawsuit will attempt to prove the immigration ban is unconstitutional and that the actions it spurs are “separating Washington families, harming thousands of Washington residents, damaging Washington’s economy, hurting Washington-based companies, and undermining Washington’s sovereign interest in remaining a welcoming place for immigrants and refugees.”

Information from CNBC contributed to this report.