Copper, a metal used in electronics and construction, is headed for its worst week since June. The reason? Investors are worried that the US government is delaying a decision on import tariffs—taxes the government can place on goods coming into the country. When there's uncertainty about whether these tariffs will happen, it makes traders hesitant to buy copper, since they don't know what costs will look like in the future.
When major investors get nervous about policy decisions, they often sell assets like copper to reduce risk. This selling pressure pushes prices down. Right now, traders are essentially waiting to see what the US government will do before making big bets on copper.