Twenty-two states sue Trump administration over carbon rule replacement

Los Angeles: A coalition of 22 US states and seven cities on Tuesday sued President Donald Trump's administration to block it from easing restrictions on coal-burning power plants.

Trump has set about systematically dismantling environmental regulations put in place by his predecessor Barack Obama, including the Clean Power Plan, which called for cuts to greenhouse gas emissions from power plants.

Finalised in 2015, it was put on hold by the Supreme Court and the White House has ordered the Environment Protection Agency (EPA) to work on a less stringent replacement, known as the Affordable Clean Energy (ACE) rule.