I think it highly unlikely that gun control will ever make it that far. I'm inclined to say that we don't have to worry right now, because congress is so divided.
Just look at the financial debates that were supposed to be done before Jan 1st. and the results still are not satisfactory.
In my mind, should the worst case scenario happen, many people will seal their guns up in airtight / water tight cases and bury them somewhere, waiting for the government to either realize their mistake and repeal, or to let the laws expire. Either way we will once again be allowed to own arms.
I don't think we have anything to worry about, as the law makers cannot decide on anything, except maybe raising their own wages.
Even if laws were to be passed banning all guns, there would be such civil unrest form those that don't want to give up their weapons, that it likely won't be enforced. Additionally those that would be employed to take the guns away (Law enforcement / military) likely won't want to. After all they swore to defend the country and the constitution.