The ban "may not be enforced against foreign nationals who have a credible claim of a bona fide relationship with a person or entity in the United States", the court said, but "all other foreign nationals are subject to the provisions of (the executive order)". The court lifted the lower courts' injunctions and allowed the order's travel ban to go into effect "against foreign nationals overseas who have no connection to the United States at all".
The Executive Director of CAIR-CT says because this anti-Muslim ban is motivated by bigotry, that no part of the ban should take effect for any length of time.
Reacting to Monday's ruling, Trump said he felt vindicated by what he called "a clear victory for our national security".
"If a person does not have a valid visa and has applied for one", he says, "what we have heard is that the process of obtaining a new visa has slowed significantly".
Denying entry to immigrants with no connection to the country "does not burden any American party", the court said.
U.S. Sen. Jeanne Shaheen, D-NH, said a travel ban against six mostly Muslim nations lacked merit and is "contrary to our nation's core values".
Three Justices, Thomas, Alito, and Gorsuch, concurred in part and dissented in part.
An official with a higher-education association who asked to remain anonymous to speak freely about the ruling said that at first read, it appears "the court basically agrees with us".
"I am praying they will ultimately land on the side of justice and find it unconstitutional", de Blasio said.
The ruling was seen as at least a partial victory for Trump in the biggest court case of his presidency.
Trump's first executive order on travel applied to travelers from Iraq and well as the six countries, and took effect immediately, causing chaos and panic at airports as the Homeland Security Department scrambled to figure out whom the order covered and how it was to be implemented.
"There's no precedent for something like this that I'm aware of", said Jeffrey Gorsky, a former legal adviser to the State Department's Visa Office, referring to the new "bona fide" standard.
"As president, I can not allow people into our country who want to do us harm", he said.
Although the government has not yet issued guidance on the criteria for satisfying the bona fide relationship test, the Court did provide several examples of situations in which a sufficient relationship likely exists.
But the decision nonetheless marks a win for the Republican leader, who has insisted the ban is necessary for national security, despite criticism that it singles out Muslims in violation of the United States constitution.
A federal judge blocked it eight days later, and that was upheld by a 9th circuit panel. But officials would struggle to translate the ruling into concrete policy implemented by thousands of consular officers and customs agents around the world, he said. Since October about 48,800 refugees have allowed to move to the United States.