The United States face is a number of challenges and issues in the 21st-century.

The United States face is a number of challenges and issues in the 21st-century. Some are domestic and nature, while others are related to foreign affairs. Which do you believe is the most serious domestic challenge or issue? Which foreign affairs challenge or issue is the most serious?
Write two paragraphs. Once you describe a domestic challenge or issue and explain why you believe it is the most serious. The other should describe a foreign affairs challenge or issue and explain why you believe it is the most serious.