Answer : 1. "UK"
Explanation :

The solution: The “Rwanda Plan,” launched in April 2022 by former Prime Minister Boris Johnson, was aimed at discouraging asylum seekers from making the dangerous 20-mile (32 km) journey across the Channel from Europe to the southern shores of England. However, the UK Supreme Court ruled that the government's plan to send asylum seekers to Rwanda was illegal, dealing a major blow to Prime Minister Rishi Sunak's efforts to stop arrivals via small boats.