International trading tax stamp - Wikipedia

Non-denominated postage - Wikipedia

U.S. Customs and Border Protection - Wikipedia

Financial transaction tax - Wikipedia

Philately - Wikipedia

Excise - Wikipedia

International trading tax stamp - Wikipedia

International trading tax stamp - Wikipedia

2023 International Tax Competitiveness Index

Sales taxes in the United States - Wikipedia

National Firearms Act - Wikipedia

What Is the General Agreement on Tariffs and Trade (GATT)?