Cities usually have less than a week worth of food.
Imagine what kind of chaos you could easily cause by placing IED’s on the trucking lanes in and out of the cities.
Wouldn’t take that many to bring this country to it’s knees and he has not stopped flying them in since he was elected.
What’s a trucking lane? You mean the regular interstates, where hipsters drive their Priuses and Subarus, commuters in their carpools, and school buses mixed all mixed in with the semis?
Easier still would be an EMP. Take out the electric grid and the computer,s with their just-in-time database inventories set to POS registers, and the warehouses won’t know what to put on the trucks which will not be running anyways.