According to market news, The Mining Pod blog show revealed that the U.S. Customs and Border Protection (CBP) is detaining certain imported Bitmain Antminer miners at U.S. ports of entry. The equipment involved is Bitmain's Antminer S21 and T21 series, which are Bitmain's latest ASIC miner series. The sources said that the FCC and CBP are not targeting other ASIC manufacturers such as MicroBT or Canaan. In addition to disclosing that the FCC has requested a freeze, U.S. Customs and Border Protection has not provided the affected parties with a specific reason for taking the action, nor has it stated how long the shipment will be detained.