Delegation and power to contract.

The department may delegate any duties or powers given to the department under this section to county child support agencies, except that the department must approve the initiation of any levy proceedings under sub. (7). The department shall promulgate rules prohibiting a county child support agency from using the powers delegated under this subsection to enforce a child support lien, if the value of the property that is subject to the lien is below the dollar amount specified in the rules.