I'm sorry but I don't think the bible should rule the nation, he shouldn't be making laws based on his religious beliefs, he's entitled to have those beliefs but shouldn't be pushing them on everyone.
Its not about only "religious beliefs", or "my morality against your morality", if bible tell us to do or not something is because its the best for us as humans its not only because God had an "idea" to forbid something just because, its because he made us and know what is better for us.
Besides that, as i understand, the laws are made to protect life, for health and to be able to live in peace in a country and if you allow porn then it has consecuences like violence, divorces, child abuse, prostitution and its really ridiculous that goverment dont put laws to stop the "origin" of the things that will cause a need of hospitals, jails, and more money of the goverment expended in things to be able to manage the consecuenses for not putting a stop from the begining.
Besides that, there are a lot of children looking in the internet nowdays, and we have the right to protect them from all the bad things that are inside the internet. Im aware that we cant protect them from everything but we can make an effort to have a safer place for them.