I don't see what could be gained from nesting VPNs because you're identifying yourself to the innermost VPN. Tor is designed so that exit nodes don't know who you are.
I imagine you could pick a few Anti US government VPNs and at least 1 wouldn't cooperate.
Assuming it's a commercial VPN it has your billing data and doesn't matter that you connected to it via another VPN.
I don't see what could be gained from nesting VPNs because you're identifying yourself to the innermost VPN. Tor is designed so that exit nodes don't know who you are.