Comment by thaumasiotes

> Various groups of stakeholders will declare any such regulation an infringement on free speech (ie. "The constitution gives me the right to sell fake penis pills to fund my radical political agenda!")

This is just an awful example. There is not a free speech right to pay for your own speech by committing crimes, and nobody claims or would claim that there is. Similarly, you don't see the argument made that vendors enjoy the constitutional right to sell fake pills. What spammers want to do, and what anti-spammers want to stop them from doing, is to advertise real pills, and yes, there are extensive free speech implications there.