Ah, the old freedom of speech argument again. The right to freedom of speech granted to you in the First Amendment says that the government cannot restrict your speech. It does not mean that you are free to go over your boss's head, when you have been told not to, with no possible repercussions.
In putting an ultimatum in front of your boss, you essentially said, "Give me what I am demanding or I quit". He took you at your word.
Was this handled well? Not even remotely, by either you or the manager.
Did the manager violate any laws? No, again not even remotely.

