Advocates encouraged travellers from the affected countries who qualified for entry to get on planes as soon as possible because of the unpredictable legal terrain. The first flights carrying previously barred travellers reached Logan International Airport in Boston, with more expected at airports across the country today.
The developments continued what has been a chaotic rollout of Trump's order. More than a dozen legal challenges have been filed around the country, and only one judge so far has indicated that he was willing to let Trump's order stand.
The decision of Robart, who was nominated by President George W. Bush and has been on the Bench since 2004, was the most consequential because of its national implications. It is somewhat unusual for a district judge to issue an order that affects the entire country, but Robart said it was necessary to follow Congress's intention that "the immigration laws of the United States should be enforced vigorously and uniformly". He was quoting from a 2015 appeals court ruling that had blocked President Barack Obama's executive action that would have made it easier for undocumented immigrants in the country to remain. It was never implemented because of legal challenges.
Justice Department lawyers were preparing to immediately ask the US Court of Appeals for the 9th Circuit to dissolve Robart's order. It will go to a panel of judges who consider such emergency requests. While the losing side can then request intervention from the Supreme Court, it would take the votes of five justices to overturn the panel decision. The court is ideologically divided between four liberal and four conservative members. The issue could reach the high court in days or weeks.
Robart granted a request from lawyers for the states of Washington and Minnesota. Officials had revealed that about 60,000 - and possibly as many as 100,000 - visas already have been provisionally revoked as a result of Trump's order.