After the President’s defeat in the Supreme Court, more tariffs, with different legal foundations, are underway. …Here is a primer: …Under Section 122 of the Trade Act of 1974, tariffs can be levied for up to 150 days (after that, Congress has to vote to extend them) in response to “situations of fundamental international payments problems.” The statute defines such circumstances as “large and serious US balance-of-payments deficits and/or circumstances” in which the dollar faces “imminent and significant depreciation.” …Section 232 tariffs are trade restrictions authorized by Section 232 of the Trade Expansion Act of 1962, allowing the US president to impose tariffs or quotas on imports of specified goods (imported from anywhere) deemed to threaten national security. …Section 301.  This is a similar process to Section 232, but applies to countries rather than specific goods. U.S. trade penalties authorized under Section 301 of the Trade Act of 1974 allow the U.S. Trade Representative (USTR) to impose duties against foreign countries for unfair trade practices.