Mr. Trump is expected to withdraw the United States from the agreement per his campaign promises and sources who are familiar with the matter, but will likely make a formal announcement regarding the position Thursday afternoon.
Haley has defended Trump's decision saying he knows climate is changing.
Later on Saturday, US Vice-President Mike Pence said remaining in the Paris accord would have proved costly to US economic growth and to the working-class Americans at the core of Mr Trump's political base.
"Mayors, governors, and business leaders from both political parties are signing onto a statement of support that we will submit to the United Nations - and together, we will reach the emission reduction goals that the USA made in Paris in 2015", he wrote.
In March, with coal miners standing by, Trump signed an executive order mainly targeting the Clean Power Plan, a signature effort by Obama to reduce greenhouse gas emissions from coal-fired power plants in keeping with US promises of the Paris Agreement.
Maybe the worst-case scenario is that this action leads to trade retaliations from other countries, which draw counter-retaliations from Trump, and eventually, a trade war.
Haley declined to answer and instead insisted that Trump acknowledged climate changing was happening. The decision was a reversal of the Obama administration's announcement a year ago that the USA would enter the agreement, and most of the rest of the world has also signed on. We signed it due to our commitment to protecting the environment.
Trump, he said, is not going to renegotiate the treaty despite suggesting he might do so "because he doesn't believe in it". The decision has drawn a negative reaction from around the world with world leaders vowed to enhance their commitment to the landmark accord. Cuomo said in a statement, "As the federal government abdicates its responsibility to address climate change", NY was leading the nation in advancing "a clean energy future".
He says Trump concluded it would put the nation at an economic disadvantage.
In the excerpts of the interview released on Saturday, Haley did not explain why the USA did not stay inside the accord and amend U.S. targets.
"The rest of the world is moving forward", said Gore, who in July will release his second global warming documentary, "An Inconvenient Sequel: Truth to Power".
"Just because the USA got out of a club doesn't mean we aren't going to care about the environment", she said.