The issue is not just porn — it is the precedence of forcing internet providers to be net-nannies — today, child porn, tomorrow, who knows? Evidence of statements against the government?
Yes that was my point as well. They will certainly not stop at porn..they will go after deadbeat dads, tax evaders, people who criticize the govt, etc. CP is one of those hot-button emotional issues that govt/lea manipulates to legislate more and more surveillance laws over us.