President Donald Trump on Tuesday signed four executive orders designed to make the United States "energy dominant" and "unleash" the nation's energy reserves, including coal.

President Donald Trump signed an executive order on Tuesday that attempts to revive the declining coal industry, arguing the fossil fuel is necessary to ensure U.S. dominance in sectors such as artificial intelligence.

The moves include loosening environmental rules, but it is unclear how much they can help reverse the sharp decline in coal power over the last two decades.