But it's sure to set off more unhinged tweeting from president Donald Trump, who has spent days attacking the Seattle judge who granted a temporary retraining order on the ban last weekend.
Trump immediately responded with an all-caps tweet: "SEE YOU IN COURT, THE SECURITY OF OUR NATION IS AT STAKE!".
Assuming the 9th Circuit's ruling is appealed, the Supreme Court could eventually decide the issue. He was however in for a rude surprise when the 9th US Circuit Court of Appeals ruled against his ban.
"The hearing on the preliminary injunction (on Friday) will be one of the most significant developments in any case in the country challenging the suit because it will be the most in-depth examination of the merits of the arguments against the ban", Michael Kelly, a spokesperson for Virginia attorney general's office, said in a statement.
However, the court's ruling does not resolve the lawsuit.
The ruling means that travelers from the seven countries in the executive order - Syria, Sudan, Somalia, Libya, Iran, Iraq, and Yemen - can continue to travel to the U.S. Refugees from Syria and other countries may also enter the U.S.
Thomas Cook cautious for 2017 despite 'solid' start to new year
Partly because of the prevailing high prices in Spain, bookings to Greece for summer 2017 are up by almost half. The firm said it was "cautious" about 2017, shares fell by 10 per cent in morning trade.
That suspension remains in place as a result of the 9th Circuit Court's ruling on Thursday. The tech industry's objection to the ban marked a turning point in the industry's detente with Trump, who before he was sworn in invited 13 tech execs to meet with him at Trump Tower in NY to discuss topics ranging from investment to immigration policy. Those arguments aired live on TV, the internet and across social media.
Trump subsequently railed against Robart on Twitter, accusing him of overstepping his authority and jeopardizing national security.
The ruling means migrants, visitors and refugees from the affected countries can continue to travel to the U.S. if they have valid visas or green cards - something which Mr Trump had attempted to stop with his executive order.
He explained that Trump would have a much better chance if the Supreme Court had nine justices, but without Judge Neil Gorsuch being confirmed, the administration's chances of success are "dicey".
Instead, the appeals judges teed up the issue for further review, saying it's "well established" that evidence outside the text of a law can be considered in cases that consider these "significant constitutional questions".
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