Legalizing DDT and the Consitution

Reading the constitution posted in a local paper I noticed a modification. The Branson newspaper modified freedom of speech with "reasonable". I think it's important to note that one of the writers wrote a lenghty article last month detailing why DDT should be re-legalized.

Phyllis often brings good points up in her argument and has proved to be a powerful voice for conservatives. She often brings fresh perspective, more so, a gauge of the party line.

The question I have is "Who is to determine what is reasonable?"