Former Vice President Al Gore has suggested that Trump will ultimately agree with Exxon, pointing to reports that Ivanka Trump, the first daughter who has an official role at the White House, will make climate change one of her "signature issues".
That is partly because US accounts for only 16 per cent of global emissions. The Department of Justice declined comment.
"With the new Executive Order and the budget proposal, Trump has shown that he does not believe in climate change and has chose to go back on his nation's global commitments to reduce emissions and provide funding".
But coal is dying as a major energy source in the United States for reasons far beyond the reach of executive orders.
Putin: 'Read my lips,' election interference claims are lies
Mark Warner, vice chairman of the committee, are continuing their probe of alleged Russian interference in the 2016 USA election. The hearing Thursday was to address how the Kremlin allegedly uses technology to spread disinformation in the US and Europe.
"Rolling back the Clean Power Plan will only rob us of the renewable energy jobs of the future and the prospect of cleaner air, cleaner water, and an economy that is more competitive in the global marketplace", said Peters.
China promised Wednesday to stick to its climate commitments after President Donald Trump eased USA curbs on coal and oil use, opening the way for Beijing to assert itself as a leader in environmental policy.
"The Paris Agreement is still under discussion within the administration", White House spokesman Sean Spicer said.
The Clean Power Plan was an important part of the USA commitment to reduce greenhouse gas emissions in the country by 26 to 28 per cent below their 2005 levels by the year 2025.
Workers a year ago load "clean coal" promoted by the government at a factory in Qianan, in northern China's Hebei province.
The order's main target is former President Barack Obama's Clean Power Plan, which required states to slash carbon emissions from power plants - a key factor in the United States' ability to meet its commitments under a climate change accord reached by almost 200 countries in Paris in 2015.
Trump's ignorant, head-in-the-sand approach makes it even less likely that the US will meet its promised carbon emissions targets established under the 2015 Paris Agreement.
"The president doesn't get to simply rewrite safeguards; they have to ... prove the changes are in line with the law and science", Mr Goldston asserted. "I think many of them like what's happening", said Barbara VanHanken with the Green Country Sierra Club. The Obama administration, some Democratic-led states and environmental groups countered that it would spur thousands of clean-energy jobs and help the US meet ambitious goals to reduce carbon pollution set by the worldwide agreement signed in Paris.