A US judge has declined to issue an emergency order banning President Donald Trump's revised travel ban.

The ruling came from Seattle district judge James Robart, the same judge who had issued the order that in effect halted implementation of the first ban, reported BBC.

Judge Robart said lawyers needed to file more extensive documentation.

The new 90-day ban on citizens of six mostly Muslim nations is due to come into effect on Thursday but has sparked legal action in a number of states.

Lawyers in Washington state had asked Judge Robart to extend his decision on the first ban to cover the second. But the judge cited procedural reasons for not doing so, stated the report.

He said a complaint or a motion would have to be filed before he could rule.

The justice department had argued that since the initial travel order ban had been revoked, the judge's first ruling could no longer apply. Those opposing that argument said the new travel ban had the same effect as the original.

In succeeding with the first ban, they argued the move was unconstitutional and damaging to businesses in Washington state.

White House spokesman Sean Spicer said on Thursday that the administration believed the new order would withstand legal scrutiny.

The first order, which Trump signed in January, sparked mass protests as well as confusion at airports.
Critics maintain the revised travel ban still discriminates against Muslims. Trump supporters say the president is fulfilling his campaign promises to protect Americans.

Citizens of Iran, Libya, Syria, Somalia, Sudan and Yemen, six countries on the original 27 January order, will once more be subject to a 90-day travel ban.

Iraq was taken off the banned list because its government boosted visa screening and data sharing, White House officials said.

The new directive says refugees already approved by the state department can enter the US. It also lifts an indefinite ban on all Syrian refugees.

Green Card holders (legal permanent residents of the US) from the named countries will not be affected.

The new order does not give priority to religious minorities, unlike the previous directive. Critics of the Trump administration had argued that this was an unlawful policy showing preference to Christian refugees.