President Donald Trump has signed a new proclamation barring citizens from 12 countries from entering the United States, citing national security concerns.

The full travel ban affects nationals from Afghanistan, Myanmar, Chad, Congo, Equatorial Guinea, Eritrea, Haiti, Iran, Libya, Somalia, Sudan, and Yemen.

The restriction will take effect on June 9, 2025.

In addition to the full bans, the proclamation imposes partial restrictions on citizens of Burundi, Cuba, Laos, Sierra Leone, Togo, Turkmenistan, and Venezuela.

There are some exemptions, including athletes travelling for major sporting events, some Afghan nationals and dual nationals with citizenship in unaffected countries, according to the BBC.

Trump stated that the measure is intended to prevent individuals considered potential security risks from gaining entry into the US.

“We cannot have open migration from any country where we cannot safely and reliably vet and screen,” he said in a video message posted on X on Wednesday.