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The Trump administration has confirmed plans to repeal an Obama administration rule to reduce greenhouse gas emissions.

Environmental Protection Agency (EPA) Administrator Scott Pruitt, who has voiced doubt of climate change, called the Clean Power Plan an overreach.

President Donald Trump ordered the EPA to rewrite the rule in March.

The Clean Power Plan requires states to meet carbon emission reduction targets based on their energy consumption.

Mr Pruitt said he would sign the proposed rule to begin withdrawing from the plan on Tuesday.

"The war on coal is over," he told a crowd in Hazard, Kentucky, on Monday.

He continued: "That rule really was about picking winners and losers.

"Regulatory power should not be used by any regulatory body to pick winners and losers."

Mr Pruitt has previously argued that the Clean Power Plan would force states to favour renewable energy in the electricity-generation market.

As Oklahoma's attorney general, he took part in a lawsuit by 27 US states against the rule.

A Supreme Court ruling in February 2016 left the regulation in limbo.

The EPA under President Barack Obama said the Clean Power Plan could prevent up to 150,000 asthma attacks in children and 6,600 premature deaths.

But according to US media, a leaked draft of the repeal proposal disputes the health benefits touted by the previous administration.

The draft also reportedly argues the country would save $33bn (£25bn) by dropping the regulation.

The Clean Power Plan required states to devise a way to cut planet-warming emissions by 32% below 2005 levels by 2030.

Eliminating the rule would make it difficult for the US to fulfil its promise to cut emissions as part of the Paris Climate accord, a 2015 international agreement which President Obama signed with nearly 200 other countries to limit greenhouse gas emissions and combat global warming.

Mr Trump in June signalled that he would pull out of the pact, dismantling his predecessor's environmental legacy.

In August the Trump administration issued its first written notification to the UN that it intended to withdraw from the agreement.

But the move was largely viewed as symbolic as no nation seeking to leave the pact can officially announce an intention to withdraw until 4 November 2019.

The process of leaving then takes another year, meaning it would not be complete until just weeks after the US presidential election in 2020.

The planned repeal of the Clean Power Plan has sparked outrage among environmental groups.

The National Resources Defense Council (NRDC) if the plan is repealed while the Sierra Club has indicated it would fight any new rule that does not comply with the country's air pollution laws.

Mary Anne Hitt, the director of the Sierra Club's Beyond Coal Campaign, the Trump administration was "putting the safety of our communities at risk, and making it crystal clear they have no intention of safeguarding people from the very real, immediate dangers of climate change".