Also, there seems to be a misconception that CPS itself has the power to take your children away from you. In reality, you'd go to court over it and a judge would decide. CPS would share whatever evidence they had (which, if everything you say is true, they don't have any), but the judge would ultimately decide. I don't see them wanting someone to follow up within seven weeks as them "holding you" or anything of the sort. It will likely be a phone call or a short visit. The chance of them taking your children is very very slim. If they had reason and proof to do that, they'd have done it by now.
I've seen two situations where the children were removed at an initial visit, with no order. I'm in Canada, and I'm sure the rules are somewhat different, but I've never read anything that suggests this can't happen. I know CPS can't keep kids without an order, but I've seen them take them without an order. (Neither situation was a wonderful living environment, in one way or another...but there was no hint of immediate danger to the children in either case.)
In the US, social workers only remove kids immediately when there is a huge, immediate, pressing safety issue. Parents who refuse access to their children can be lumped into this category because the worker cannot verify that there isn't a huge issue and may have to rely on the initial report until they have access to the children. But, certainly judges are making a lot of decisions, and quickly, so if a child truly is not in danger, that child would be returned home per the judge's order or per the social worker realizing once they had access to the child that the child was safe. It isn't like a social worker can yank a kid out of a home and then have no courts and no judge, GAL, parents involved for months.
Also, Storm Bride, respectfully, you have no idea really what the report was that ended with those two families having CPS involvement. The vast majority of people don't air their dirty laundry. They cover it up. So, if mom got really ticked off and had a hard time controlling her anger, and happened to burn Junior with a cigarette, but feels nothing but shame and remorse about this, do you really think she's going to fess up to you? I can count on one hand the number of parents I've worked with who haven't truly loved their children and who haven't felt shame and remorse at the things they did that landed their family in "the system." I highly doubt the majority are willing to share secrets from their darkest moments. So, unless you lived with them, and shadowed their children 24/7, you cannot possibly be even close to certain that you know why they had contact with the CPS system. Assuming that you know the real circumstances when it is impossible for you to be certain, and assuming CPS is the big bad monster at fault for their childrens' removal does nothing but provoke worry in the people you share this story with and in you as well. Do yourself and everyone and favor and leave room for the probability that these parents weren't giving you a complete and accurate portrait of what occurred.