According to exclusive reports from Blockspace, the U.S. Customs and Border Protection (CBP) is detaining certain imported Bitmain Antminer machines at U.S. entry ports. Some shipments have been held by U.S. Customs and Border Protection for two months, with detentions "happening nationwide," including ports in San Francisco and Detroit. The imported products in question are Bitmain's Antminer S21 and T21 series, which are Bitmain's latest ASIC miner series. Reports indicate that these large-scale shipment freezes and related investigations are unprecedented for Bitcoin miners, with uncertainty regarding the specific reasons for the detained imports. U.S. Customs and Border Protection has not targeted other ASIC manufacturers such as Shenma or Canaan. U.S. Customs and Border Protection was established in 2003 and is part of the Department of Homeland Security, with responsibilities including regulating U.S. imports.
