(Salem, OR) -- Oregon is suing the federal government over President Trump's executive order ending birthright citizenship. It dates back centuries and under the Fourteenth Amendment to the Constitution, all children born in the U.S. are citizens. Oregon Attorney General Dan Rayfield says the President's executive order is a violation of the Constitution. Oregon, Washington, Arizona, and Illinois are filing the lawsuit. It seeks an injunction to prevent the order from taking effect until it can be decided in court.