Amps Exactly, hence Mullvad
It all depends on where the VPN provider is based when it comes to subpoena issues. Most based in western countries gladly hand over your browsing history to the feds if asked as they are required to by law, so you have to choose wisely.
Most of the companies mentioned on here provide a good vpn service which will protect your comms however many will not hesitate to hand over your logs
