It seems to me he should clearly focus on the the cannabis sector and that's a licensed company primarily involved in Laboratory Testing. A clear second choice would be those 'state of the art' and massive licensed greenhouse growers.
All this readily exists in far safer Canada, a far, far safer investment enviornment than the US and AG Sessions.
To that end, involvement with Canadian companies like Abattis Bio (testing +), Aphria ((grower/worldwide) and General Canopy (major factor/worldwide), are superb companies to be associated with, as 'all hell' will soon breakout in July 2018 nationwide in Canada.
Then there's always Evio and that coming series A Steep Hill equity offering.