Democratic attorneys general from California and NY are among states discussing whether to legally challenge President Donald Trump's order to restrict people from seven Muslim-majority countries from entering the United States, according to officials.
Ferguson took to twitter and released a copy of the joint statement on Sunday.
State Attorney General Bob Ferguson will make an announcement in wake of an executive order by President Donald Trump barring refugees from several countries.
Ferguson was one of 16 state attorneys general who released a statement Sunday calling Trump's immigration action "un-American and unlawful".
Attorney generals in NY and California were joined by counterparts in CT, the District of Columbia, Hawaii, Illinois, Iowa, Maine, Maryland, Massachusetts, New Mexico, Oregon, Pennsylvania, Vermont, Virginia and Washington state.
In his closing remarks, Governor Inslee expressed concerns over how the order will affect members of the Washington National Guard now serving in the Middle East.
"We will use all of the tools of our offices to fight this unconstitutional order and preserve our nation's national security and core values", according to a statement signed by the attorneys general.
"We are committed to working to ensure that as few people as possible suffer from the chaotic situation that it has created", they added.
Trump rejected criticism that the order amounted to a Muslim ban, saying more than 40 majority Muslim countries were not affected.
A federal judge in NY on Saturday night granted an emergency stay temporarily halting the removal of people who, though with previously approved refugee applications or with valid visas, had been detained following Trump's order.
The complaint says that Trump's new policy is "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".
But the order excludes countries behind the September 11, 2001, terrorist attacks, including Saudi Arabia, Egypt, Lebanon, the United Arab Emirates and Afghanistan.
Trump's order sparked large protests around the country over the weekend, including one that drew 3,000 people to Seattle-Tacoma International Airport.
"We're arguing that the executive order is unconstitutional".
"Because I love this country, I am horrified by its blemishes, and this immigrant ban is a blemish", said Julia Louis-Dreyfus, who won best comedy TV actress for her portrayal of U.S. President Selina Meyer on HBO's political satire "Veep". It's not fair and it's not right.
Other legal challenges to Trump's executive order are pending in Chicago, New York and other cities.