But few appreciated just how close the system came to a logistics and pricing headache – and how a little-known technicality in US trade law could have hampered copper’s ability to flow freely. The key takeaway for traders is stark: if Section 232 were ever applied to copper, they would face essentially two choices – put metal in Foreign-Trade Zones (FTZs) and plan to re-export it, or place it in bonded warehouses and wait it out. Neither option is perfect, but both allow traders to preserve flexibility under a tariff regime. FTZ storage lets copper eventually leave the country without paying duties but bars it from ... (full story)