Trump's travel ban to remain blocked

Hillary Clinton has taken a sly dig at her presidential rival Donald Trump after a US appeals court upheld a temporary suspension of his controversial travel ban.

Mr Trump has lambasted the 9th US Circuit Court of Appeals ruling as highly political.

The decision came in a challenge to Mr Trump's order filed by the states of Washington and Minnesota. The US Supreme Court will likely determine the case's final outcome.

The White House said it had no immediate comment.

But Mr Trump did, tweeting: "SEE YOU IN COURT, THE SECURITY OF OUR NATION IS AT STAKE!"

Ms Clinton did too, sending a tweet just saying '3-0' in reference to the losses Mr Trump's order has suffered in court.

Mr Trump's January 27 executive order barred entry for citizens from Iran, Iraq, Libya, Somalia, Sudan, Syria and Yemen for 90 days and imposed a 120-day halt on all refugees, except refugees from Syria who are barred indefinitely.

US District Judge James Robart suspended Trump's order last Friday.

The ruling from the 9th Circuit, which follows a hearing on the case on Tuesday, does not resolve the lawsuit, but relates instead to whether Mr Trump's order should be suspended while litigation proceeds.

Mr Trump had says the order is vital for national safety and has criticised Judge Robart for suspending it.

In response to the decision, Mr Trump was still confident they'd still succeed.

"It's a decision that we'll win, in my opinion, very easily."

He had not spoken to his new Attorney-General Jeff Sessions about the next steps yet.

In its ruling, the court said the US government had not offered any evidence of national security concerns that justified banning seven countries.

The US Justice Department said it is reviewing the appeals court decision and was "considering its options".

AAP