kandyflip...if mom wants to buy a new dress with the CS $, it better be for the child, not her! You're right, it is her money, but it is her money in the respect that it is supposed to go for the child's expenses and it is intended to offset those expenses.
again! cs is a reimbursement, so if the cp does cash the support and go out and buy herself a dress then she is within her right to do that, she has already paid rent/mortgage-which is an expense the child has, utilities-which are an expense the child has, food- which is an expense the child has, transportation- which is an expense the child has, clothing- which is an expense the child has etc. etc. etc.
now as stated before, if the child is going without then the cp may need some money management education, but it is none of anyone else's business what the cp does with the child support, and especially does not owe anyone an accounting of every dollar.
and hoping that a cp would be made to account for the money is a pipe dream, cse can't even keep up with making sure everyone gets/pays their money, now you want them to audit it too? not going to happen.
I never accounted my spending to my ex, and he never asked me to, we both know we love our son and want what is best for him. Although our ideas of what that is may be different. Now that custody has changed I will be paying child support and I will not ever ask or think I have the right to ask for an accounting of that money. Our son has bills in that home, that is what the support will pay.
Granted there are the wack jobs that abuse the system or want to control everything, or ones who want control even when it's not their business (as in the case of new spouses). but on the whole I don't think this has to be such a volatile issue, when looked at from the proper perspective.