Isn't this the point where 'the people' should not sit on their laurels, and launch a proposal to make a law that does exactly the opposite: protecting the digital rights of citizens? I am asking because (also in the EU) we are usually happy when some draconian law does not make it, but there's rarely an attempt to push for legislation that secures the rights of internet users.
What would your proposed law say? Congress can't make a law that says that it can't make a SOPA-like law in the future (or, at least, it would be meaningless, since future legislation could repeal it).
At least a repeal would entail the difficulty of repealing opposing & established legislation. There are a lot of laws which would be enacted save for the outcry of repealing what is considered an established explicit right. This in contrast to an inability to reference an explicit manifestation of a claimed right in opposition to a trampling thereof. "You can't prohibit that!" is often overridden by "there's nothing that says we can't."