Officials at Connecticut universities are urging international students to be cautious after President Donald Trump recently implemented a travel ban barring citizens from a dozen countries from entering the country.

“We are advising caution if you are somebody from one of the travel restricted countries even if you have that valid visa,” said Rae Alexander, assistant vice president for global affairs at UConn during an informational public meeting online on the issue Tuesday. “We still advise caution when deciding whether to travel internationally especially as we wait to see how this plays out in practice. The proclamation can be confusing. There are different offices that are going to be interpreting the proclamation.”

Alexander said the university is waiting to see how the ban is executed in the coming weeks and whether litigation will occur.

“It is very impactful for those who are subject and we are working closely with students that have been directly impacted but please, we urge most students, do not panic and get help from your international office,” Alexander said. “As we urge caution with travel, this may not be the best time to leave the U.S. to renew your visa just for the sake of renewing it.”

The proclamation that Trump signed last week applies to citizens of Afghanistan, Myanmar, Chad, the Republic of Congo, Equatorial Guinea, Eritrea, Haiti, Iran, Libya, Somalia, Sudan and Yemen. It also imposes heightened restrictions on people from Burundi, Cuba, Laos, Sierra Leone, Togo, Turkmenistan and Venezuela who are outside the U.S. and don’t hold a valid visa.

The new ban does not revoke visas previously issued to people from countries on the list, according to guidance issued Friday to all U.S. diplomatic missions. However, unless an applicant meets narrow criteria for an exemption to the ban, his or her application will be rejected starting Monday. Travelers with previously issued visas should still be able to enter the U.S.. even after the ban takes effect.

U.S. Sen Richard Blumenthal said in an email Tuesday that the “Trump Administration’s capricious and cruel revocation of student visas is sowing chaos at universities and colleges in Connecticut as students scramble to adjust to immigration policies that change daily.

“International students make immense contributions to their communities – academically and economically – and they deserve due process and certainty about their futures,” he said.

Connecticut universities are still learning the full implications of the travel ban and how it may impact specific international students, but they do expect those students to experience extra scrutiny at airports when they return to campus this fall.

“We know that this is a time of a lot of uncertainty and that fall is here in just a few months,” Alexander said. “We are committed to help all students traveling to get here for fall.”

Stephanie Reitz, UConn spokesperson, said UConn had about 3,150 international students enrolled last fall across all campuses including UConn Health.

“If this fall’s enrollment numbers are similar to last fall’s, we would have about 100 students/visiting scholars affected,” she said. The largest numbers of students last fall and in a typical year recently have been from China. However, we traditionally have a large number from Iran as well, which would constitute the largest number affected by the ban if this fall’s international enrollment is similar to last year’s.”

International students comprise roughly 9.9% of the student body at Wesleyan University, according to information from the university.

Wesleyan University said that when “we bring international students here, they experience what it’s like to live in a free country.

“While there are legitimate security concerns, the government is using that as a vehicle to impose their will on a sector they don’t like,” the university said. “These policies are misguided and counterproductive.”

Yale University’s latest figures include 3,735 international students from 125 different countries comprising 25% of total enrollment. Of those, the top countries of origin include China, India, Canada, United Kingdom, South Korea and Germany, according to information from Yale.

The university stated in its official response online that “we are still working to understand the full scope of the proclamation,” while directing students on specifics of the proclamation.

Concerns have also been raised about international students’ mental health as a result of the travel ban.

Kymberley Hendricks, director of student care and concern at UConn, said during the public meeting, specifically with “these international students we have seen a lot of mental health concerns,” citing a stressful situation for them and implications for what they are managing financially and academically.

Arthur Galinat, director of International Students and Scholar Services at UConn, said that he expects the ban to be in place for some time.

“There is one exception to the travel ban that we did not put in our slides … which read that the Secretary of State could make an exception for anyone coming to the USA as part of the Olympics,” Galinat said. “The Olympics are taking place in 2028 and so to me that reads that they are anticipating that the travel ban could be in effect until that duration of time.”

Galinat said this is his personal reading of the presidential proclamation.

“Because of that statement it gives me the sense that they are planning long term for this,” he said.

Despite repeated attempts, officials from the Connecticut State Colleges and Universities could not be reached for comment.

The Associated Press contributed to this report.