President Donald Trump of the United States has signed a new proclamation imposing additional travel restrictions on foreign nationals, with Nigeria and 15 other countries added to the list of nations facing partial entry limitations into the U.S.

The decision, announced on Tuesday, is part of the Trump administration’s ongoing efforts to tighten U.S. travel standards and strengthen border and migration controls.

Under the new proclamation, the countries newly subjected to partial travel restrictions are Angola, Antigua and Barbuda, Benin, Côte d’Ivoire, Dominica, Gabon, The Gambia, Malawi, Mauritania, Nigeria, Senegal, Tanzania, Tonga, Zambia and Zimbabwe.

The proclamation also maintains full travel restrictions on the original 12 countries earlier classified as high-risk. These are Afghanistan, Burma, Chad, Republic of the Congo, Equatorial Guinea, Eritrea, Haiti, Iran, Libya, Somalia, Sudan and Yemen.

In addition, full restrictions have now been extended to five more countries following recent U.S. security assessments. They include Burkina Faso, Mali, Niger, South Sudan and Syria, as well as individuals holding travel documents issued by the Palestinian Authority.

According to the proclamation, Laos and Sierra Leone, which were previously under partial restrictions, have now been placed under full travel restrictions. Meanwhile, partial restrictions remain in force for Burundi, Cuba, Togo and Venezuela.

The U.S. government, however, lifted non-immigrant visa bans on Turkmenistan, citing what it described as improved cooperation with U.S. authorities, although restrictions on immigrant visas for Turkmen nationals remain in place.

The proclamation provides exemptions for lawful permanent residents of the United States, holders of valid visas, and certain visa categories, including diplomats and athletes. It also allows entry for individuals whose travel is deemed to be in the national interest of the United States.

Analysts say the latest measure forms part of President Trump’s renewed crackdown on migration and border security since his return to the White House. The administration has also intensified enforcement actions, including the deployment of Immigration and Customs Enforcement (ICE) officers to carry out arrests linked to immigration violations.

The inclusion of Nigeria and other African and Caribbean countries has already generated public debate, particularly over its potential impact on travel, education, business and family reunification for affected nationals.