"Blatantly unconstitutional": Judge blocks Trump's birthright citizenship order

• The president's order would also extend to parents in the country legally but temporarily, like foreign students, workers or tourists.

Driving the news: U.S. District Judge John C. Coughenour sided for now with four states that sued — Arizona, Illinois, Oregon and Washington.

• They had argued the 14th Amendment and Supreme Court case law guarantee the right to birthright citizenship.
• The temporary restraining order is in effect for 14 days, the judge said.

Zoom out: Trump signed the order on his first day in office Monday, and was swiftly met by lawsuits from every state with a Democratic attorney general.

• The case ruled on Thursday is just one of five lawsuits brought by 22 states, along with other challenges filed by immigrants rights organizations, including the American Civil Liberties Union.

Flashback: Trump had floated the prospect of ending birthright citizenship in his first term too, but didn't follow through at the time.

Go deeper: Trump offers first defense of birthright citizenship order in court filing

Editor's note: This is a breaking news story. Please check back for updates.