Well, my situation may not work for you though.
I had to give my FedEx account number to D4 Toys, they shipped it, but when it landed in US, FedEx did not have correct information (Country or origin) on customs paper.
This delayed the process, and both myself and D4 Toys submitted correct information to FedEx. Few days went with no movement, I contacted FedEx to make sure that they had information in their file. Another few days and nothing, so I called again, and this time, I was passed to different people few times, and I had to explain what the item was in more detail (Action figure, plastic content, etc). FedEx agents all stated that since the 27th of August, a lot of new people got hired due to de minimis ending, and most of them didn't even have proper training to add the correct customs codes (harmonized codes for clearance). After a long call, 2 days later it finally cleared and now it is on its way to me.