Realistically interdiction of yeasts producing controlled substances would be a losing game. People regularly smuggle much more obvious contraband whereas a dec

Realistically interdiction of yeasts producing controlled substances would be a losing game. People regularly smuggle much more obvious contraband whereas a decent amount of starter culture could be easily concealed in the average travelers personal effects and would not be detectable without dna testing that would take more than 24 hours to carry out. If the DEA were concerned about it's ostensible mission this would be the point where they give up and start looking at Portuguese style decriminalization. As it is, expect them to start busting homebrewers and yoghurt makers and expanding their civil forfeiture efforts into creative new forms of thievery.