"The Paris Agreement as drawn and as we signed was very unfair to the United States".
Analysts have said the U.S. withdrawal from the Paris agreement makes it more hard for the world to reach the goals that it set for itself in the Paris agreement.
When he announced last June he was pulling the United States out of the accord, Mr Trump said he wanted to negotiate a new "fair" deal that would not disadvantage U.S. businesses and workers.
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.
Mr Trump's decision last June would make the U.S. in effect the only country not to be part of the accord. "It took away a lot of our asset values", Trump said.
Democrats' central demand is legislation to preserve the Obama-era DACA program, which was ended by Trump past year and shields illegal immigrants brought to the United States as children from deportation.
Under Trump, the USA has made successive roll-backs on environmental protections, scrapping the Clean Power Plan, which sought to inch the US away from its use of coal-burning energy, and opening previously protected lands up to mineral exploration. It hurt our businesses.
He noted that other nations - China, for instance - would have until 2030 to abide by the Paris conditions.
"The EPA and commissioners are very powerful in the sense that they want to have clean water, clean air - but we also want businesses that can compete".
"We need the wall for security, we need the wall for safety, we need the wall for stopping the drugs from pouring in", Trump said Wednesday.
"We are not going to let that happen".
"I would imagine that the people in the room both Democrat and Republican, I really believe they're going to come up with a solution to the DACA problem which has been going on for a long time", Trump said, alongside Prime Minister Erna Solberg of Norway in the East Room.