Has anyone heard of former state representative Nancy Schaefer of Georgia? In 2007, she released a report called "The Corrupt Business of Child Protective Services" highlighting many of the abuses you have described here. Her political career was over soon after, and she insisted that she was blacklisted due to her outspoken opposition.
Unfortunately, she was allegedly killed by her husband in a murder-suicide a few years later. I cannot help but be skeptical about the circumstances of her death, considering the many enemies she made as an advocate. You will not find many politicians speaking to this issue, so perhaps her story has served as a warning to others.