I can see the tax rebellion part as more people can't afford property taxes to pay for socialist indoctrination facilities (public schools). THIS issue will win us more GOP governorships than any other issue.
Food riots? Well, drive through knuckle dragger flyover country and understand how much arable land we have.
Revolution? I'd rather just succeed from the Union and form a new country that honors the original constitution (minus the slavery part).
I live where there is arable land. You can’t control weather, which influences harvest quality and quantity. You need inputs of diesel and fertilizer to grow more than enough for yourself and to dry it, in the case of corn, after harvest. You need to buy seed, which is perishable. You need roads and bridges, not to mention tires and fuel and materials for truck maintenance and repair to get it to the cities. You need security on the roads if people are going to transport anything.
Then, once it gets to the city, what if the price is beyond the reach of most? Then you have rationing. That would set off panics and riots. Where do you store it until it can be distributed? Who provides what level of security? How do you keep the hordes from finding ways to travel out to the nearest farms and taking what they want? How many farms are situated in defensible terrain? What size gang of looters can a landowner hold off?
Lots of considerations and things could play out much differently than anyone can imagine.