Where the heck is Max's COC?

And, what is a COC you ask. A COC is Max's certificate of citizenship. Max became a citizen after passing through customs and immigration in Newark, but we still have no documentation of that. We should have received that form within 45 days of our arrival in the US. For those not counting it's been 47 days. I need this to get Max's Kansas adoption certificate, his social security number, and I can't get his passport until I have those things. Not that we have any imminent international travel plans, but what if we're suddenly offered a trip to Spain? Really what frustrates me is I now have to try and contact the USCIS which is always a nightmare. I can't imagine when I'll squeeze that into my schedule.