U.S. President Donald Trump's administration has expanded its travel ban to include 24 nations, with restrictions impacting 17 African countries including Tanzania, South Sudan, and Nigeria due to security and overstay concerns.

• The new restrictions involve full suspension for 8 countries and partial suspension for 16 others, affecting immigrant and nonimmigrant visas such as B-1, B-2, F, M, and J.
• The White House cited "demonstrated, persistent, and severe deficiencies in screening, vetting, and information-sharing" as the reason for the expanded ban.
• Nations like Burkina Faso and Sierra Leone faced full suspension due to high visa overstay rates (e.g., Sierra Leone's B-1/B-2 overstay rate of 16.48 percent and F, M, J visa overstay rate of 35.83 percent) and historical refusal to accept removable nationals.