The Trump administration is weighing whether to bar citizens of 36 more countries from entering the United States, according to an internal State Department cable reviewed by Reuters and first disclosed by the Washington Post. The document, signed by Secretary of State Marco Rubio, instructs U.S. embassies to tell the governments concerned that they must strengthen passport security, share more data on travellers and accept the return of deportees or face full or partial travel restrictions. The draft list covers 25 African nations along with countries in the Caribbean, Central Asia and the Middle East, including Angola, Egypt, Nigeria, Syria, Tanzania and Uganda. The memo gives those governments 60 days to meet the new benchmarks, citing inadequate vetting, visa overstays and terrorism-related risks. If enforced, the measure would more than triple the scope of the administration’s travel ban policy. Earlier this month, President Donald Trump barred the issuance of new visas to citizens of 12 countries—among them Afghanistan, Iran and Libya—and imposed narrower limits on seven others such as Cuba and Venezuela. Expanding the ban to the additional 36 nations would place roughly one-fifth of the world’s population under some degree of U.S. travel restriction, escalating an immigration crackdown that has already drawn criticism from affected governments and human-rights groups.