WASHINGTON — President Donald Trump is weighing the next iteration of his controversial travel ban, which could include new, more tailored restrictions on travelers from additional countries.

The Department of Homeland Security has recommended the president impose the new, targeted restrictions on foreign nations from countries it says refuse to share sufficient information with the U.S. or haven’t taken necessary security precautions. The restrictions could vary by country, officials said.

Trump’s ban on visitors from six Muslim-majority nations, which sparked protests and a flurry of lawsuits, is set to expire this coming Sunday, 90 days after it took effect.

“The acting secretary has recommended actions that are tough and that are tailored, including restrictions and enhanced screening for certain countries,” Miles Taylor, counselor to acting Homeland Security Secretary Elaine Duke, told reporters on a conference call Friday.

But officials refused to say how many countries — and which countries — might be affected, insisting the president had yet to make a final decision on how to proceed.

Taylor said the recommendations were based on whether countries were providing U.S. authorities with enough information to validate the identities of potential immigrants and visitors and to determine whether or not they posed a threat. The recommendations were first reported by the Wall Street Journal on Friday.

Trump’s travel ban executive orders remain two of the most controversial actions of his administration. The ban, which went into effect in late June, barred citizens of Iran, Libya, Somalia, Sudan, Syria and Yemen who lacked a “credible claim of a bona fide relationship with a person or entity in the United States” from entering the country. The Supreme Court is scheduled to hear oral arguments on the constitutionality of the ban next month.

Officials described the process of reaching the new recommendations as far more deliberate and systematic than Trump’s original travel ban order, which was signed just days after he took office with little consultation or input outside the White House.

While most countries already met the standards, officials said that some that didn’t have made changes that put them in compliance. Other countries, however, were unable or “deliberately unwilling” to comply.