State Contract Laws: Primary body of state-specific laws governing contract formation, enforcement, and interpretation, as contract law is primarily state-based in the United States

Uniform Commercial Code (UCC): Particularly Article 2 for sale of goods and Article 9 for security interests, providing uniform rules for commercial transactions across states

Restatement (Second) of Contracts: Collection of general principles of contract law that courts often rely on for guidance in contract interpretation and enforcement

Assignment Law Provisions: State-specific laws governing the transferability of contractual rights and obligations, including anti-assignment provisions and requirements for valid assignments

Securities Laws: Federal Securities Act of 1933, Securities Exchange Act of 1934, and state 'Blue Sky' laws if the assignment involves securities or investment contracts

Industry-Specific Regulations: Federal and state regulations, licensing requirements, and professional certifications specific to the industry involved in the contract

Statute of Frauds: State law requirements for certain types of contracts to be in writing to be enforceable

Recording Requirements: State-specific requirements for recording or filing assignments and amendments, including notice requirements

Delegation Laws: State laws governing the delegation of duties and obligations under contracts

Bankruptcy Code Provisions: Federal bankruptcy law provisions affecting the assignability of contracts and rights in bankruptcy situations

Amendment Requirements: State-specific legal requirements for valid contract amendments, including form and substance requirements

Novation Principles: Legal principles governing the substitution of a new contract for an existing one, potentially relevant in certain assignment situations