U.S. President Donald Trump is reportedly considering adding Nigeria and several other African nations to an expanded list of countries facing U.S. travel and visa restrictions.

According to The Washington Post, an internal memo signed by Secretary of State Marco Rubio outlines that 36 countries may be included in the new round of travel bans, pending presidential approval. The move is part of the Trump administration’s ongoing efforts to tighten immigration controls and enhance national security.

The administration cited concerns over inadequate government transparency, unreliable identity documentation systems, and limited cooperation in sharing traveler information. Officials said these factors make it difficult to properly vet visa applicants from the affected nations.

Among the countries named in the memo are 25 African nations, including Nigeria, Angola, Benin, Burkina Faso, Cameroon, Cape Verde, Côte d’Ivoire, the Democratic Republic of Congo, Djibouti, Egypt, Ethiopia, Gabon, The Gambia, Ghana, Liberia, Malawi, Mauritania, Niger, São Tomé and Príncipe, Senegal, South Sudan, Tanzania, Uganda, Zambia, and Zimbabwe.

Also listed are countries outside Africa, such as Antigua and Barbuda, Dominica, Saint Kitts and Nevis, Saint Lucia, Bhutan, Cambodia, Kyrgyzstan, Syria, Tonga, Tuvalu, and Vanuatu.

The list notably includes some of America’s strategic partners in Africa, such as Egypt and Djibouti, which have strong military ties with the United States.

Countries targeted by the proposed restrictions have been asked to submit an initial plan of action by Wednesday to meet new vetting and information-sharing standards set by the U.S. State Department. According to the memo, governments have been given 60 days to comply with the updated requirements or risk visa sanctions.

The U.S. also highlighted that some of the listed countries lack a competent or cooperative central authority to issue reliable civil documents, while others have been flagged for high levels of government fraud or for having large numbers of citizens who overstay visas in the U.S.

This potential expansion comes shortly after the Trump administration imposed similar travel restrictions on citizens from 12 other countries earlier in the month, including Afghanistan, Myanmar, Chad, the Republic of Congo, Equatorial Guinea, Eritrea, Haiti, Iran, Libya, Somalia, Sudan, and Yemen.