Texas Alcoholic Beverage Code - ALCO BEV § 37.10. Restriction as to Source of Supply

(a) No holder of a nonresident seller's permit may solicit, accept, or fill an order for distilled spirits or wine from a holder of any type of wholesaler's or winery permit unless the nonresident seller is the primary American source of supply for the brand of distilled spirits or wine that is ordered.

(b) In this section, “primary American source of supply” means the distiller, the producer, the owner of the commodity at the time it becomes a marketable product, the bottler, or the exclusive agent of any of those.  To be the “primary American source of supply” the nonresident seller must be the first source, that is, the manufacturer or the source closest to the manufacturer, in the channel of commerce from whom the product can be secured by Texas wholesalers and Texas wineries.  Except as provided by Subsection (c), a product may have only one primary American source of supply to Texas.

(c) A product may have more than one primary American source of supply to Texas if the product is a wine that is bottled or produced outside of the United States.