Copper shipments into the United States are expected to accelerate in the coming weeks in a final scramble to get metal across the border before U.S. President Donald Trump's higher than expected 50% tariff on imported copper takes effect.

The president has published just 22 letters, many to minor trading partners like Brunei, Moldova and Sri Lanka.

United States President Donald Trump's proposed 50% tariff on copper imports would affect Mexican exports worth around US $1 billion per year.

U.S. President Donald Trump's 50% tariff on copper has placed a record premium on prices of the metal in the United States that is likely to ease over the coming months as a stockpile created by traders anticipating the levy works through the system.

“The U.S. has been sucking in lots of copper that it didn’t really need from around the world,” Albert Mackenzie is a copper analyst at Benchmark Mineral Intelligence. President Trump had signaled that the tariffs were coming months ago, prompting many U.S. buyers to stockpile copper ahead of time.

U.S. President Donald Trump's announcement of a proposed 50% tariff on copper imports has raised concerns in Chile and Peru, which together account for nearly 40% of global copper production.

Goldman Sachs said on Wednesday that copper shipments into the United States are expected to accelerate in the coming weeks following U.S. President Donald Trump's announcement of a 50% tariff on imported copper.

Trade tensions and demand worries are among catalysts contributing to recent dip in copper prices. - However, weakness in the industrial metal may be short-lived as the long-term outlook still shines.