A US judge in Seattle has issued a temporary nationwide block on President Donald Trump’s ban on travellers from seven mainly Muslim nations.
Federal Judge James Robart ruled against government lawyers’ claims that US states did not have the standing to challenge Mr Trump’s executive order.
Last week’s order has led to protests and confusion at US airports.
Customs officials have told US airlines that they can resume boarding banned travellers while a legal case is heard.
Gulf carrier Qatar Airways told Reuters news agency it would start accepting all passengers with valid travel documents.
The administration, however, could again block them if it were to win an emergency stay. The justice department says it will appeal against the Seattle ruling.