By your reasoning, pretty much every state and local government action would now be a federal issue.
It seems like their trying to solve a constitutional - not federal - issue of whether citizens can take actions like this against the state.
Texas says no.
So, does the 14th amendment "incorporate" the state judiciaries consistently, or just in select cases when government can really stick it to private taxpayers?
It would sure as hell be a “federal” issue if you did nothing they didn’t like on that exact spot on the highway. Say the farmer blocked the highway, or found a way to undermine that wall and drain his property across it.
He would suddenly be charged federally as a “terrorist”.