Mass. joins fight against Trump’s new travel ban
Boston Globe - 03/09/2017
Rachel Rosenbloom, a Northeastern University law professor who specializes in immigration policy, said it makes sense for attorneys general to concentrate their efforts on the lawsuit in Seattle, because the restraining order Robart issued applied nationwide.
She added that “there’s nothing unusual with states joining together to challenge a federal policy,” noting several states joined a Texas lawsuit to challenge then-President Barack Obama’s immigration policies.