WASHINGTON (CBSNewYork) — Supreme Court arguments set for next month over President Donald Trump’s travel ban have been canceled after new restrictions on travel to the U.S. from eight nations were announced Sunday.

Briefs from both sides are due on Oct. 5, CBS News reported. Arguments had been scheduled for Oct. 10.

Trump signed an executive order Sunday replacing his revised travel ban with restrictions on travel from Chad, Iran, Libya, Somalia, Syria, Yemen and North Korea. Certain Venezuelan government officials and their immediate families are also barred from entering the U.S. Each country has its own tailored restrictions.

Guided by the Department of Homeland Security, the White House gave countries that were not following protocol 50 days to ramp up security.

The initial travel ban sparked massive protests and legal challenges. The revised plan approved by the Supreme Court ruled visitors from flagged countries had to prove a “credible claim of a bona fide relationship with a person or entity in the United States.”

Similar rules apply here. If someone already has a visa or green card, they will be allowed into the U.S. but those applying after the restrictions are in effect will face a tougher vetting process or may be denied altogether.

What’s different is that these restrictions could be indefinite. Senior White House officials say it is “condition-based and not time-based,”

When releasing the news, Trump tweeted: “Making america safe is my number one priority. We will not admit those into our country we cannot safely vet.”

The changes will take effect on Oct. 18.

The president’s temporary ban on travelers from six Muslim-majority countries expired Sunday.