Here's an idea... You need to sit down with a doctor every 6 months to see if you are mentally competent enough to speak freely.
See how stupid that sounds? Let's treat the 2nd just like the 1st... are there any laws that "reasonably restrict" the right to free speech, free press, and freedom of religion? NO! So why would we even allow even the slightest restriction (NFA) of the 2nd?