The government is always behind the curve when it comes to regulating technology. The rise of text messaging has forced local and state governments to create new laws to discourage/punish distracted driving. Airbnb and Uber have disrupted the traditional hotel and taxicab industries respectively, and have caused lawmakers to rethink how best to regulate those industries.
3-D printing is on the verge of becoming a mainstream technology and we'll continue to see more issues like the one highlighted in this story.
The Second Amendment to the US Constitution protects the right of the people to keep and bear arms. Does it also allow us to print our own weapons? Does the First Amendment to the US Constitution protect websites that provide instructions and blueprints on how to print your own weapons (or parts of weapons)?