United States President Donald Trump has signed a new proclamation expanding America’s travel restrictions to include Nigeria and 15 other countries.

The directive, signed on Tuesday, introduces partial entry limitations for nationals of the newly listed countries as part of stricter U.S. travel and security measures.

Countries affected by the new restrictions include Angola, Antigua and Barbuda, Benin, Côte d’Ivoire, Dominica, Gabon, The Gambia, Malawi, Mauritania, Nigeria, Senegal, Tanzania, Tonga, Zambia and Zimbabwe.

The proclamation retains full travel bans on 12 countries earlier classified as high risk, namely Afghanistan, Myanmar (Burma), Chad, Republic of the Congo, Equatorial Guinea, Eritrea, Haiti, Iran, Libya, Somalia, Sudan and Yemen.

In addition, five more countries—Burkina Faso, Mali, Niger, South Sudan and Syria—have been placed under full travel restrictions following updated security assessments. Individuals travelling with Palestinian Authority-issued passports are also affected.

Laos and Sierra Leone, which were previously under partial restrictions, have now been moved to the full restriction category, while partial limitations remain in force for Burundi, Cuba, Togo and Venezuela.

The proclamation also eased non-immigrant visa restrictions on Turkmenistan, citing improved cooperation with U.S. authorities, though immigrant visa limitations remain.

However, exemptions apply to lawful permanent residents, existing visa holders, diplomats, athletes, and individuals whose entry is considered to be in the national interest of the United States.