Uniform Commercial Code (UCC): Primary federal law governing commercial transactions, especially Article 2 which deals with the sale of goods. Essential for structuring sales terms and conditions.

Federal Trade Commission Act: Federal legislation that prohibits unfair or deceptive trade practices, affecting how sellers can market and sell their products.

Consumer Protection Laws: Federal regulations protecting consumer rights, including warranty requirements and fair business practices.

Antitrust Laws: Sherman Antitrust Act and Clayton Act governing competition and preventing monopolistic practices in seller-buyer relationships.

State-Specific UCC Variations: Local modifications to the UCC that vary by state, affecting how sales contracts are interpreted and enforced in different jurisdictions.

State Consumer Protection Laws: State-level regulations providing additional consumer protections and business requirements specific to each jurisdiction.

Product Safety Standards: Industry-specific safety requirements and standards that sellers must comply with when offering products.

Data Protection Requirements: Laws governing the collection, storage, and handling of customer data, including privacy protection obligations.

E-SIGN Act: Electronic Signatures in Global and National Commerce Act governing the validity of electronic signatures and records in commercial transactions.

Tax Regulations: Federal and state tax reporting obligations and sales tax requirements for sellers.

Dispute Resolution Laws: State-specific arbitration laws and requirements for jurisdiction and venue in legal disputes.