The combination of "copper" and "penny" might not seem like the best formula for valuable coins considering that you can find ...

President Donald Trump ordered the Commerce secretary to compile a report about whether U.S. reliance on foreign copper threatens national security. In his order, the president sought policy ...

President Trump on Tuesday signed an executive order opening an investigation into whether foreign production and imports of copper threatens America’s economic and national security. The ...

Tariffs, if they are imposed, could boost U.S. production of a valuable resource but also raise costs for automakers, construction companies and others. By Ana Swanson and Shawn McCreesh Ana ...