Washington DC - The US is considering extending its travel ban to 36 more countries, a person who has seen the memo said Monday, marking a dramatic potential expansion of entry restrictions to nearly 1.5 billion people.

The State Department early this month announced it was barring entry to citizens of 12 nations – including Afghanistan, Haiti, and Iran – as well as imposing a partial ban on travelers from seven other countries, reviving a divisive measure from President Donald Trump's first term.

But expanding the travel ban to three dozen more nations, including US partners like Egypt along with other countries in Africa, Asia, the Caribbean and the Pacific, appears to escalate the president's crackdown on immigration.

The Washington Post said it reviewed the internal memo and reported it was signed by Secretary of State Marco Rubio and sent to diplomats who work with the countries.

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A person who has seen the document confirmed its accuracy to AFP.

It reportedly gives the governments of the listed nations 60 days to meet new requirements established by the State Department.

The countries include the most populous in Africa – Nigeria, Ethiopia, Egypt, Democratic Republic of Congo, and Tanzania – as well as Cambodia, Kyrgyzstan, Saint Lucia, South Sudan, Syria, and Vanuatu.

Should the ban expand to include all countries cited in the memo, nearly one in five people worldwide would live in a country targeted by US travel restrictions.

The 19 countries facing full or partial entry bans to the US, combined with the 36 cited in the latest memo, account for 1.47 billion people, or roughly 18% of the global population.

When the initial ban was announced this month, Trump warned it could be expanded to other countries "as threats emerge around the world."

The ban at first did not include Egypt, although the proposed follow-up list does.

Trump said the initial measure was spurred by a recent "terrorist attack" on Jews in Colorado.

US officials said that the attack's suspect Mohamed Sabry Soliman – an Egyptian national according to court documents – was in the country illegally, having overstayed a tourist visa, but that he had applied for asylum in September 2022.