The United States plans to make a visa-bond programme permanent for applicants from Bangladesh and 49 other countries.
The planned rule is scheduled to take effect on 3 August.
It covers B-1 business and B-2 visitor visas.
Consular officers may require covered non-immigrant visa applicants to post a bond as a condition of visa issuance.
The bond amount would be set by the consular officer and could be as high as $20,000.
A 2025 pilot allowed bonds of $5,000, $10,000 or up to $15,000.
The final arrangement removes the $5,000 option and increases the maximum bond by $5,000.
Thirty of the 50 countries covered by the programme are in Africa.
Bangladesh, Nepal and Bhutan are identified as the South Asian countries included in the programme.
U.S. officials say the policy is intended to reduce the number of visitors who remain in the country after their visas expire.
Immigration-rights advocates argue that the requirement could discourage lawful travel and raise concerns about the wider impact of restrictive immigration policies.