What do you mean by not seeing the "free act" preaching? I believe that the American concept of freedom is precisely that, with free speech being just one, albeit particular, subset of that general freedom. Take the first amendment: all about free exercise of religion, the freedom of speech, the freedom of the press, the freedom of assembly. And then, the fifth amendment is about being "Innocent Until Proven Guilty". So, free to act, until it's proven to be against the specifically forbidden things.

I know that reality has much more nuance, but still, it's not the point. Freedom is speech is not alone.