Former U.S. President Donald Trump has reintroduced a sweeping travel ban, barring entry to citizens from 12 countries, including Afghanistan, Iran, Libya, Somalia, and Yemen, citing national security concerns. Additionally, stricter restrictions have been imposed on travelers from 7 other nations, such as Cuba, Venezuela, and Turkmenistan.

The ban, expanded from his earlier 2017 policy, now covers both immigration and non-immigration visas (B-1, B-2, F, M, J categories). Trump justified the move as a measure to prevent radical Islamic terrorism and to address high visa overstay rates and poor cooperation from certain countries. The Supreme Court had previously upheld a similar ban in 2018.

Key reasons include Taliban control in Afghanistan, state-sponsored terrorism in Iran and Cuba, and high visa overstay rates in nations like Chad and Eritrea.