Despite the concern from the global community, U.S. President Donald Trump has announced sweeping tariffs on nearly every country in the world. Economists have warned that this is the most significant escalation of U.S. tariffs in nearly a century, and the move will dramatically increase American consumer prices, weaken the domestic economy, and could even cause devastating effects for global trade. What is the purpose of piling up tariffs against the world? How should the rest of the world respond? What could be the fallout for the U.S. and global economies?