the CBP has broadened the scope of its scrutiny to target MicroBT and Canaan ASICs as well, while also seizing Bitmain units for the first time since the CBP started taking action last fall.
Speaking to the increased scope of detainment, Synteq Digital cofounder and CEO Taras Kulyk said that “virtually every Asian ASIC manufacturer is being impacted by customs clearance issues.”
This has got to be frustrating. It sounds like there's no explicit law forbidding the import but they're detained because of their likeness to other Chinese chips.