Donald Trump is considering issuing a new travel ban executive order, he said on Friday, even as the White House announced that the administration does not plan to escalate a legal dispute over the president's original travel ban order to the Supreme Court.

The development came as it was reported by CNN that law-enforcement sources believe some conversations detailed in a 35-page dossier on Donald Trump and Russia to be accurate.

The wide-ranging document, compiled by Christopher Steele, a British former intelligence agent, included the allegation that Kremlin colluded with Mr Trump’s presidential campaign and that the Russian security services have material that could be used to blackmail him.

Several law-enforcement officers and intelligence sources told the US network that some conversations detailed in the dossier took place, but could not confirm whether they related directly to Mr Trump.

Commenting on the new reports, Sean Spicer, the White House press secretary, said: "We continue to be disgusted by CNN's fake news reporting."

The news of Mr Trump's potential new travel ban came as the president condemned a "disgraceful decision" by an appeal court to block his original order banning entry to the United States by refugees and citizens of seven Muslim-majority countries.

During a visit with reporters aboard Air Force One to Florida from Washington, Mr Trump said he was considering "a brand new order" that could be issued as soon as Monday or Tuesday if the administration decided to move in that direction.

The White House official separately said: "We are actively considering changes or other executive orders that will keep our country safe from terrorism."

The official said: "The temporary restraining order we would not take to the Supreme Court, but we are reviewing all options in the court system."

At the White House earlier in the day, Mr Trump said: "We'll be doing something very rapidly having to do with additional security for our country. You'll be seeing that sometime next week.

Mr Trump said he had learnt of threats "you could only learn of if you were in a certain position, namely president" and he would "not allow that to happen to our country".

If Mr Trump's ban were immediately taken to the Supreme Court, it could be looked at before he could secure the appointment of Neil Gorsuch, his conservative Supreme Court nominee, to the bench, with Democrats set to delay that by filibustering in Congress.