Charter makes it easy for our clients to reference important resources all from one location with direct links into customs related items, petroleum / etrochemical and air transport organizations, regulatory authorities, research materials and other useful references.  Please note that there are multiple pages of links below which are organized in the following manner:

HTSUS - Harmonized Tariff Schedule of the U.S.

CFR - Customs Regulations (enter 19CFR in search field to access Customs regulations)

USC - Link to U.S. Code provisions enforced by CBP

CROSS - Customs Rulings On-Line Search System

USITC - U.S. Court of International Trade

Legislative Tracking

Federal Register