CFR › Title 22 › Part 91Part 91 — Import Controls§ 91.1— Answering inquiries regarding tariff acts and customs regulations.§ 91.2— Furnishing samples to collectors of customs or appraising officers.§ 91.3— Assistance to Customs and Tariff Commission representatives.§ 91.4— Alcoholic liquors on vessels of not over 500 tons.