> CBP’s Automated Commercial Environment (ACE) system can apparently only batch-process 10,000 entry summary lines at a time, and there are over 1.6 billion entry summary lines that need updating. Importers frequently lumped their IEEPA duties together with other duties on the same line, meaning CBP personnel would have to manually untangle the amounts. Processing each individual refund takes about 5 minutes, which across 53 million entries works out to over 4.4 million hours.