(Portland, OR) -- Oregon is among nearly a dozen states planning to sue the Trump administration over the separation of children from their parents at the Mexican border. The lawsuit is being led by Washington State Attorney General Bob Ferguson, who announced the suit yesterday in a news conference in front of the Federal Detention Center in SeaTac. Ferguson says the lawsuit will allege that the Trump administration is violating the constitutional due-process rights of families by separating them as a matter of course. The lawsuit will also challenge the constitutionality of Trump's new executive order meant to halt the separation policy. Ferguson says the order is riddled with so many caveats, it essentially makes it meaningless. Other states joining in on the lawsuit include California, Massachusetts, Maryland, New Mexico, Pennsylvania, New Jersey, Iowa, Illinois and Minnesota.