The Federal government enforces a few rules and then leaves things to the state and people. Obviously that means the state and people have no nanny to protect them from consequences of their decisions. If they drain their budgets fighting the civil rights of their population instead of fixing a problem then they might look like a lot of bankrupt municipalities. The US is obligated to let that happen.

Not really. The federal government bails Texas out of the messes they get themselves into all the time (like their shitty power grid). Historically, Texas has often received more in federal funding than it contributes in federal taxes.