Officials in a number of states have spoken out against President Trump's recent executive actions on immigration. On Monday, Washington state became the first to file a lawsuit against the administration, seeking a restraining order to stop enforcement of the ban.

"If successful it would have the effect of invalidating the president's unlawful action nationwide," Attorney General Bob Ferguson said of the lawsuit, according to member station KNKX.

Citing the most recent U.S. Census Bureau data (from 2015), the suit says Washington is currently home to more than 7,200 noncitizen immigrants from Somalia, Iran, Iraq, Libya, Syria, Sudan and Yemen — the seven nations listed in Trump's immigration ban.

In its court filings, the attorney general's office included statements Trump made as a candidate dating back as far as December of 2015. That's when his campaign issued a statement titled, "Donald J. Trump Statement on Preventing Muslim Immigration," which called for "a total and complete shutdown of Muslims entering the United States until our country's representatives can figure out what is going on."

Trump's immigration ban, the lawsuit says, "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."

Over the weekend, Ferguson was among more than a dozen Democratic attorneys general who signed a statement in which they pledged to fight what they called an "unconstitutional order." Other states are likely to take action against the ban, either on their own or by joining Washington's suit.

In Massachusetts, for instance, Attorney General Maura Healey's office says she is planning to challenge the order; in New York, Attorney General Eric T. Schneiderman's office is filing to join a federal lawsuit against President Trump that was originally filed by the American Civil Liberties Union Foundation.

The Washington suit names as defendants President Trump, Homeland Security Secretary John Kelly, and Acting Secretary of State Tom Shannon, along with the federal government.

The Washington lawsuit also includes several media reports and interview transcripts about Trump's ban, including his interview with the Christian Broadcasting Network that was promoted under the headline, "Brody File Exclusive: President Trump Says Persecuted Christians Will Be Given Priority As Refugees."

Filed in federal court in Seattle, the Washington documents include an emergency motion for a temporary restraining order, saying irreparable harm will result from Trump's executive action that bans travel from the seven Muslim-majority countries and suspends the U.S. refugee admissions program.

Announcing his lawsuit against the immigration ban, Ferguson said, "We are a country based on the rule of law and in a courtroom it is not the loudest voice that prevails, it's the Constitution."

When it imposed the immigration ban, the Trump administration cited concerns about potential terrorism threats; it has also noted that only a portion of the world's majority-Muslim countries are on the banned list. But as NPR's Greg Myre reported, the executive order "doesn't include any countries from which radicalized Muslims have actually killed Americans in the U.S. since Sept. 11, 2001."

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