In that first link that unlocking after contract is mentioned.

It also states cell carriers normally unlock for their customers without a law.

However you and I both know that would be a false assumption.

In the deal with the FCC and Mr. Wheeler they stated they would unlock voluntarily partially and fully in two years. Now with a signed law what do you think the carriers will do? That's right deny the requests.

My neighbor has a Sprint iPhone and he went to the Sprint Store not the reseller and told them to unlock his device. Before the law was signed. Sprint said "Their policy is not to unlock any of their iphones" they even went so far as to say even if it was unlocked it cannot work on any US carrier because its proprietary only to Sprint.

So just what good is a law if it does not allow functionality on other carriers?

Good Luck