Welcome back to Foreign Policy ’s Latin America Brief. The highlights this week: Copper prices soar amid growing global demand and U.S. tariff threats, Colombia and Ecuador have a trade spat , and Mexico’s president makes an unusual demand of a K-pop group . Sign up to receive Latin America Brief in your inbox every Friday. Sign up to receive Latin America Brief in your inbox every Friday. Sign Up By submitting your email, you agree to the Privacy Policy and Terms of Use and to receive email