Subchapter X. National Defense Housing Insurance 12 U.S. Code §1750. Definitions 12 U.S. Code §1750b. Insurance in critical areas 12 U.S. Code §1750c. Mortgage insurance benefits 12 U.S. Code §1750e. Taxation 12 U.S. Code §1750f. Rules and regulations 12 U.S. Code §1750g. Insurance of additional mortgages