That doesn't mean shit to this country. The UN does not have higher authoritative power over our own Constitution. Who is going to rain sanctions down upon us? No one.
Not to mention that this would never hold up in a US court. The first person to be charged with something will have a case that will rocket its way to the Supreme Court. You know how we Americans are when it comes to our freedom of speech rights...the entire population would be in an uproar. Considering that this country was founded on the rights of freedom of speech and religion, I can't see a judge on either side of the aisle ever finding this anything less than unconstitutional.