They can ram through and legislation they want, it won't fly. The right to keep and bear arms is a god given right, not a privilege granted by a bunch of bureaucratic a**h***s. It has nothing to do with laws, it is a right and shall not be infringed.
Even if such a law is passed, the vast majority of us will not comply. What then? Do they go door to door and arrest or even kill people? That won't happen. As soon as they see that true patriots will not succumb to tyranny, they will realize the futility of it.
Our forefathers knew that the power of government is granted to it by the people they represent. However, they also knew that power corrupts and thus included the second amendment to insure that the people had the ultimate authority.
Our government is sick and corrupt. Those in power have perverted the relationship between government and the citizens. If we allow this to happen, our republic is lost and we will only have ourselves to blame.
So pass your draconian laws, try to usurp the people's rights. See what happens, it won't end well!