US President Donald Trump’s travel ban on several Muslim majority countries will ultimately be upheld at the US Supreme Court, says the White House press secretary.

Sean Spicer told reporters during a press briefing on Monday that the president would ultimately be vindicated despite the 9th Circuit Court of Appeals’ decision to put an end to his ban on immigration from six majority-Muslim countries.

"I think we can all attest that these are very dangerous times and we need every available tool at our disposal to prevent terrorists from entering the United States and committing acts of bloodshed and violence," he said. "We continue to be confident that the president's executive order to protect our country is fully lawful and ultimately will be upheld at the Supreme Court."

The White House press secretary (pictured below) made the statement less than an hour after a federal appeals court refused to lift a decision that has blocked the ban's implementation so far.

According to the 9th Circuit Court of Appeals, "The president recently confirmed his assessment that it is the 'countries' that are inherently dangerous, rather than the 180 million individual nationals of those countries who are barred from entry under the President's 'travel ban.'"

The ban has been blocked on the grounds that it violates the Establishment Clause of the Constitution by disfavoring Muslims.

Federal judges have blocked Trump’s travel ban, citing extensively the president’s own words — and those of his close advisers — as reasons they were convinced to do so. The comments, the judges insisted, provide strong evidence that the directive was intended to disfavor Muslims and thus violates the Establishment Clause of the First Amendment.