The U.S. Interior Department has proposed a lease of more than 31 million acres off the coast of American Samoa for seabed mining, part of President Donald Trump's broader push to boost U.S. critical minerals production.The waters around the Pacific Ocean territory are estimated to contain large amounts of potato-shaped rocks known as polymetallic nodules filled with the building blocks for electric vehicles, weaponry and electronics.The department's Marine Mineral Administration (MMA) said on Thursday it aims to lease two blocks…