It made it very hard for us to deal in terms of business.
Trump maintained Wednesday he has "no problem" with the accord, but said he had a problem with the agreement as signed.
Trump said he was pulling the US out of the Paris Agreement past year, shortly after assuming the presidency.
"It put great penalties on us".
Standing alongside Norwegian Prime Minister Erna Solberg, Mr Trump presented himself as a champion of environmentalism. "It took away a lot of our asset values".
Former President Barack Obama signed the agreement in 2016 with 195 other nations, which all voluntarily agreed to cut greenhouse gas emissions to fight climate change. Seated in the Oval Office, Trump notes that Norway has been a strong consumer of US -built military equipment, including the F-35 aircraft.
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A full USA pullout could jeopardise global efforts to limit average warming to under 2 deg C over pre-Industrial Revolution levels.
The landmark agreement, which entered into force last November, calls on countries to combat climate change and to accelerate and intensify the actions and investments needed for a sustainable low carbon future, and to adapt to the increasing impacts of climate change.
The exchange over the environment - and Solberg's efforts to make the business case for fighting climate change - stood out as the two leaders bonded over economic ties and military might.
Donald Trump also seems to believe that the United States is "very strong on the environment" and that the country's Environmental Protection Agency (EPA) is out to protect the environment.
I'm a Christian, a nerd, a geek, and I believe that we're pretty quickly directing planet-Earth into hell in a handbasket!
"The Paris Accord really would have taken away our competitive edge". "I'm not going to let it happen".