Donald Trump's administration has implemented immigration policies that largely target individuals from nations most susceptible to climate-driven disasters, a Guardian analysis has found. This crackdown comes as the administration actively promotes fossil fuels, while millions are displaced globally due to climate change.

Of the 39 countries subject to full or partial U.S. entry restrictions, 22 are categorized among the world's most vulnerable to climate impacts. This data comes from the Notre Dame Global Adaptation Initiative, which assesses nations' susceptibility to the climate crisis.

"Nearly all of the most vulnerable countries are on a ban or visa pause," stated Danielle Wood, an associate professor at Notre Dame. Chad and Niger, identified as the two most climate-vulnerable nations globally by the index, now face complete entry bans to the U.S. Individuals from Sudan, Somalia, and Sierra Leone, also among the top 10 most exposed countries, are similarly restricted.

Countries within the most vulnerable half include Honduras, which has experienced increased severe weather events such as stronger rainstorms, droughts, floods, and coastal erosion. Historically, devastating events like Hurricane Mitch have led families to seek refuge in the U.S. after losing their homes and livelihoods.

The analysis indicates a pattern where nations grappling with the escalating effects of climate change, including extreme weather and environmental degradation, are also facing U.S. entry limitations. This creates additional barriers for populations already displaced by climate-related catastrophes.

Experts suggest that this approach overlooks the root causes of migration, which are increasingly linked to environmental instability. Instead of addressing the global climate crisis and supporting vulnerable nations, the policies appear to penalize those most affected by its consequences.

Further examination of the data shows that many of these restricted countries rely heavily on agriculture and natural resources, making them acutely sensitive to shifts in climate patterns. Disruptions to these sectors can lead to widespread food insecurity and economic collapse, forcing populations to migrate.

The findings raise questions about the long-term implications of such policies, particularly concerning international cooperation on climate adaptation and the humanitarian response to climate-induced displacement. The U.S. administration's focus on fossil fuels while restricting entry for those affected by climate change presents a significant contradiction in global climate policy.