I read your prior questions on this issue and the response from another expert, Eli. I have taken a lot of time trying to understand how we are communicating ineffectively because this is absolutely my area of practice and I know this area of law well. In reading your questions and answers with Ely I noticed you asked him about whether states were required to provide post-placement services like counseling and financial support and with that additional explanation I think I see where we are separate.
In the US there are TWO ways to do a domestic (as opposed to international adoption). In a private placement adoption (which is what I have been answering your questions thinking about) a private mom and or dad or same gender couple or single parent seeks to adopt a child from a birth mother and often uses a private placement agency. There are NO provisions for counseling or support whatsoever for these types of adoptions. The only support, per se, is in the form of tax breaks and tax incentives to encourage adoption.
Once I saw you mention counseling, etc. I started thinking you might be talking about state sponsored adoptions. These are done when a child is brought into state custody because of abuse, neglect, or abandonment. The child is usually placed with a foster parent until the child is adopted OR reunited with family of origin. The foster parent is NOT always the adopting parent.
These adoptive parents, the ones who take a child that is in the system, get all sorts of support. However, in most states the STATE is the adoption agency UNLESS the state has a subcontract with a private agency to pick up the work load. Those private agencies need to keep their license valid to continue as a subcontractor. Usually, post-placement support (in Missouri it can be called a "relative subsidy") is provided by Children's Division and they pay for counseling from a LCSW type and give welfare type assistance for encouraging adoption (especially adoption of a related child who was abandoned).
To my knowledge (and I looked) Missouri does not require the agency to do these things because those things are done directly by the state.
Keep in mind, this is now a state by state question and Missouri may be very different than California as to allocation of support post-placement.
Does this help?