Who is the CPSC certifier for foreign importers

Per CPSC, the CPC and GCC are to be certified by the US manufacturer or importer. I was wondering if CPSC’s definition of “importer” is the same as CBP’s.

Some shipments are customs cleared under foreign importer. Does this mean the foreign importer (often times the foreign MFG or seller) will need to certify the CPC and GCC since they are the “importer” for customs purposes?

Or should the CPSC certifier be a US entity which in this case is most likely the ultimate consignee ? But the ult cnee is not the importer….

I’m confused because it doesn’t make much sense for a foreign entity to certify CPC or GCC, but it also doesn’t sound right for the ult cnee to certify because they are not the “importer” .