AA biracial baby in illinois

I knew I'd have to do the ICPC wait, I just can't figure out if I have to get into the IL state system to do a private adoption. The way one woman at an agency in IL explained it, it almost sounded like I would have to be a licensed foster parent in IL no matter what state I live in. Almost like they wanted to try to keep the children born in IL in IL by making out of staters enter their foster to adopt system. Maybe I'm just too dense to get it.