For easy access, you can read Title 27 - Code of Federal Regulations and public laws relating to the wine industry.
Part 1 - Basic Permit Requirements Under the Federal Alcohol Administration Act, Non-Industrial Use of Distilled Spirits and Wine, Bulk Sales and Bottling of Distilled Spirits
Part 4 - Labeling and Advertising of Wine
Part 9 - American Viticultural Area
Part 12 - Foreign Nongeneric Names of Geographic Significance used in the Designation of Wines
Part 13 - Labeling Proceedings
Part 16 - Alcoholic Beverage Health Warning Statement
Part 24 - Wine
Part 27 - Importation of Distilled Spirits, Wine and Beer
Part 28 - Exportation of Alcohol
Formal interpretations of TTB and ATF regulations
Formal instructions to the industry that supplement TTB regulations.
Guidance to help industry members understand and comply with applicable laws and regulations
Official rules of the Department of the Treasury issued for the administration, application, and enforcement of the Federal laws administered by TTB
Other Public Guidance
Guidance documents that we have issued to help our regulated industries understand our regulations and policies