The sources behind Greco MCP.

Official customs and trade sources cited to the passage.

Coverage reviewed August 19, 2026.

Customs regulations

The full customs regulations enforced by U.S. Customs and Border Protection.

  • Official Title 19, Code of Federal Regulations
19 CFR sections

Harmonized Tariff Schedule

The current schedule in full as published by the U.S. International Trade Commission.

  • Official Harmonized Tariff Schedule (HTSUS)
HTS lines

CBP rulings

New York and Headquarters rulings issued by U.S. Customs and Border Protection.

  • Official CBP CROSS Rulings
CBP rulings

Current guidance

The latest notices from the Office of the Federal Register and messages from CBP.

  • Official Federal Register
  • Official CBP Cargo Systems Messaging Service
  • Official Presidential Actions
official channels

Export controls

Export regulations and the Commerce Control List from the Bureau of Industry and Security. Classification and licensing stay with you.

  • Official Export Administration Regulations and Commerce Control List
official texts

Sanctions lists

Sanctions lists from the Treasury's Office of Foreign Assets Control. Greco does not clear parties.

  • Official OFAC Sanctions Lists
OFAC lists