I will throw out a few:
1. Switzerland - It has been mentioned already, but it is worth noting again. Switzerland's constitution is based on the US constitution. They are still a confederacy, with a massively neutered federal state. Neutral. Want to buy property? Better be a legal Swiss resident. Guns? Here is your fully automatic military weapon. Invading armies? All of the bridges are wired with high explosives. Add value in a desired field? Wages range from 100K CHF to 1M CHF. One big gated community to keep the riff-raff out. Can't afford it? Tough shit, there are others that can. The country is currently under attack and they are buckling hoping the torment will end... sadly, they do not realize they are the target of economic warfare.
A few additional facts-
After you get your residence permit, as a foreigner, you have to register yourself in the community in which you live. If you decide to move (there may be restrictions based on the type of residence permit you have), you then have to register your move.
No more automatic weapons for non military members, Switzerland caved in to the EU Schlengen Treaty. You have to have a background check to get a weapons permit. It is routine - similar to "shall issue" in the US, but you still have to do it.
Some Swiss banks no longer take accounts for US citizens, after Switzerland caved in to the IRS.
Every resident is required to purchase private health insurance.
The Swiss joke that everything that is not prohibited is required.
If you want to give up US citizenship in favor of Swiss citizenship, it is a 14 year process - if you are successful in obtaining Swiss citizenship. Your male children will then be subject to mandatory military service (and so may you depending on your age, and if you have not served in another army).
Mandatory TV tax, autobahn tax, etc. in addition to what people in the US are used to.
Switzerland has a great deal of freedom, but it is a different type of freedom than you may be used to in the US.