my assumption is that he wants a guy like that to assist in the operations of a new american run private cartel network, after they have ousted mexican cartels who cant be reasoned with to give up their profits to the US Oligarchs and private contract groups. they get a chance to install their own american run mexican cartel in mexico, and take over their drug trade for private funding operations. it would explain the 3000 troops they sent to the southern boarder, among other "official" reason.
this guy will help them with connecting with private sellers, to private clients, and logistics. im also assuming that this "new silk road" will be heavily monitored under the guise of decentralization and privacy, for use in things like blackmail, and coercion of users. or simply to attack other drug trade networks by undermining their image and pricing.
but what do i know? im just some guy in a bathtub.