The US government simply does not trust its citizens to have their own herbal gardens, plant their own trees, or generate their own electricity or even store emergency food!.
The government wants every one to be dependent on it for health services, and to be dependent on giant drug companies to deliver expensive drug cures. It expects everyone to buy produce from agribusiness farms which are subsidized!
Case in point of this alarming government: Please click on the link:
shtfplan.com: govt criminalizes self-reliance.