https://www.fmc.gov/
Federal Register – Federal Maritime Commission: https://www.federalregister.gov/agencies/federal-maritime-commission
U.S. Customs and Border Protection (CBP): https://www.cbp.gov/
Federal Motor Carrier Safety Administration (FMCSA): https://www.fmcsa.dot.gov/
Standard Carrier Alpha Code (SCAC): https://nmfta.org/scac/