The FDA/CBP (revised) Compliance Policy Guide explains that the two agencies will exercise enforcement discretion on BTA issues until such time as the FDA publishes a final BTA rule for food imported or offered for import for non-commercial purposes.
"Non-commercial purpose" generally exists when the food is purchased or otherwise acquired by an individual for non-business purposes and the shipper is an individual (i.e., the individual delivers the food to a post office or common carrier for delivery to self, family member, or friend for non-business purposes, i.e., not for sale, resale, barter, business use, or commercial use).
Examples of foods imported or offered for import that may be covered by this non-commercial category are:
The revised guidance also clarifies that an individual is a sole human being, not a corporation. The guide also expands upon the difference under the BTA between a shipper (most likely an individual) and a carrier (most likely a commercial entity).
The complete Compliance Guide can be downloaded from the Food and Drug Administration site.