UCC Article 5: Uniform Commercial Code Article 5 - Primary U.S. domestic law governing letters of credit, establishing rules for issuance, amendment, cancellation, and honor or dishonor of letters of credit

UCP 600: Uniform Customs and Practice for Documentary Credits - International Chamber of Commerce rules that standardize international letter of credit practices

ISP98: International Standby Practices - Comprehensive framework of rules for standby letters of credit, complementing UCP 600

Federal Reserve Regulation H: Federal regulation governing state-chartered banks that are members of the Federal Reserve System, including provisions for letter of credit operations

OCC Regulations: Office of the Comptroller of the Currency regulations governing national banks' letter of credit operations and risk management

FDIC Regulations: Federal Deposit Insurance Corporation regulations affecting banks' letter of credit practices and risk assessment

UN Convention on Independent Guarantees: International treaty establishing uniform rules for independent guarantees and standby letters of credit in international trade

Bank Secrecy Act: Federal law requiring financial institutions to assist government agencies in detecting and preventing money laundering in letter of credit transactions

USA PATRIOT Act: Federal law with provisions affecting financial institutions' customer identification and verification procedures for letter of credit services

OFAC Regulations: Office of Foreign Assets Control regulations ensuring letters of credit comply with U.S. sanctions and embargo programs

State Banking Laws: State-specific regulations governing banking operations and letter of credit issuance within individual states

CFPB Regulations: Consumer Financial Protection Bureau regulations protecting consumers in financial transactions, including certain letter of credit arrangements