If the Supreme Court considers Trump's travel ban and splits 4 to 4 in its ruling, the decision of the appeals court stands.
Trump's nominee for the Supreme Court, Judge Neil Gorsuch, is awaiting confirmation hearings. Republicans are hoping to confirm him by early April.
Meanwhile, Trump made an astonishing claim yesterday that the media is intentionally covering up terrorist attacks.
Speaking to military leaders at US Central Command in Florida, Trump offered no evidence to support his accusation.
"You've seen what happened in Paris, and Nice. All over Europe, it's happening," he said. "It's gotten to a point where it's not even being reported. And in many cases the very, very dishonest press doesn't want to report it. They have their reasons, and you understand that."
Trump spokesman Sean Spicer later tried to soften the comment. "He felt members of the media don't always cover some of those events to the extent that other events might get covered," he told journalists on Air Force One.
The White House later released a list of terrorist incidents it called underreported, including last year's mass shooting in Orlando, and the 2015 attacks in Paris.
Trump also made waves with a tweet seeking to neutralise polls that reveal his approval ratings, saying that any negative polls are fake news.
The polls are historically low for this early point in his presidency.
Poll position
Donald Trump tweeted yesterday that any negative polls are fake news. Here's a look at what some of the polls said:
• His average approval rating is lower than his disapproval rating, according to the RealClearPolitics average.
• A CNN poll showed that 53% disapproved of his refugee ban executive order vs 47% who approved. A CBS News poll showed that Americans disapprove of it 51% to 45%. And Gallup showed 55% against and 42% for.
• The Gallup poll showed that Americans opposed his border wall, 60% to 38%.
• Gallup also showed they oppose halting the Syrian refugee programme, 58% to 36%.
• The CBS poll showed that people believed banning refugees went against the founding principles of the US, 57% to 35%.
• A Quinnipiac poll last week showed that people thought Trump would be a worse president than Barack Obama, 50% to 37%.