27 CFR 6.151: Exclusion, in general.

(a) Exclusion, in whole or in part occurs:

(1) When a practice by an industry member, whether direct, indirect, or through an affiliate, places (or has the potential to place) retailer independence at risk by means of a tie or link between the industry member and retailer or by any other means of industry member control over the retailer; and

(2) Such practice results in the retailer purchasing less than it would have of a competitor's product.

(b) Section 6.152 lists practices that create a tie or link that places retailer independence at risk. Section 6.153 lists the criteria used for determining whether other practices can put retailer independence at risk.