“Controlling the Interstates will starve the cities”
No it won’t. You’d be amazed at the circuitous routes truckers will take to make their delivery/get paid. In a blockade situation police and paramilitary ‘guards’ will escort trucks through. If they have air cover those will take out blockades before the convoys reach them. Then there are also reaction forces to respond to issues along the route. And security forces to report on the usability and security posture status along the entire route before the convoy departs its secured holding area. Then there are security details to actively patrol the route....
And then IEDs, ambushes, blowing bridges and culverts, and then sniping repair crews, who aren't Democrat fans to begin with, truckers begin to ask if getting a single bullet at 500 yards, thru the windshield, even if it doesn't hit, this time, is it worth it to support Communist college students and Democrat thieves...
Are we having fun yet? Civil wars are not neat and pretty.