President Donald Trump launched a sweeping overhaul of US energy policy hours after taking office Monday, putting the weight of the federal government behind fossil-fuel production and pulling back from the fight against climate change.

Trump said In his inaugural address that the US has "the largest amount of oil and gas of any country on Earth, and we are going to use it."

President-elect Donald Trump’s plan to declare a national energy emergency opens up sweeping new powers for the federal government to slash permitting requirements for energy projects, fast-track power-plant construction and loosen curbs on fossil-fuel exports.