Unfortunately the US is ranked #1 in "labor freedom" (weak/no unions) (after excluding Afghanistan, Iraq, Somalia and Sudan which had no rating). Ouch!

Europe also ranks at the bottom in "fiscal freedom" (low taxes) with Sweden, Denmark and Belgium the top 3. The same is true with "government spending" with Denmark, Belgium and Austria as the top 3. Europe does place 20 out of the top 25 in "trade freedom". (Canada is 7th and the US is 37th.)

The Heritage Foundation is about as conservative as you can get. Their "freest economy" rankings look like that they can be useful if you use them in reverse. The really progressive countries score very low in many of their categories, so that it what you have to look for.

http://www.heritage.org/Index/explore