Tariff programs
The legal authorities behind US duties beyond the ordinary rate, built from the Chapter 99 headings of the current schedule.
Section 232 national security tariffs
Duties the President sets after Commerce finds imports threaten national security: steel, aluminum, autos and parts, trucks, timber and lumber, semiconductors and more.
Section 301 tariffs on China
Additional duties on listed products of China imposed by the U.S. Trade Representative, with product exclusions granted and extended by notice.
Section 122 import surcharge
A temporary surcharge on imports from any country, limited by statute to 150 days unless Congress extends it, with listed exceptions.
Country-specific provisions
Chapter 99 headings that set or exempt additional duties for products of named countries. Check each heading’s note and the linked notices for its legal basis and status.
Other Chapter 99 provisions
Quotas, safeguards, temporary provisions and other Chapter 99 headings.