US President Donald Trump has vowed to overturn a legal ruling which suspended his ban on travellers from seven mainly Muslim countries.
He described federal judge James Robart as a "so-called" justice whose "ridiculous" opinion "essentially takes law-enforcement away from" the US.
Judge Robart ruled on Friday there were grounds to challenge the ban.
A number of airlines have said they are allowing nationals targeted by the ban to board flights to America.
