Mr Trump added: "We'll see what happens".
He had also added that the United States was walking out of the accord as it was putting USA industry at risk.
The US president's brief 24-hour trip to the French capital coincides with celebrations for Bastille Day, France's national day which is marked on Friday, and the 100th anniversary of US involvement in World War I.
The state pomp was matched by personal gestures. Trump also said the two nations have "occasional disagreements" but that doesn't disrupt a friendly association that dates back to the American Revolution.
And a month before the 2016 presidential election, a recording of Trump's conversation with then-Access Hollywood host Billy Bush were released where he was heard saying that as a star, "you can do anything", including grabbing women "by the p***y".
He said "You [the French people] have a tough president [Macron] ..."
"I have a feeling that you're going to have a very, very peaceful and attractive Paris. and I'm coming back". It is unclear what Brigitte Macron said in response.
Accompanied by their husbands, US President Donald Trump, and French President, Emmanuel Macron, the Presidential couples dined at the Eiffel Tower last night and celebrated the occasion in equally show-stopping outfits.
Trump then squeezed Melania's bicep and told her to "have a good time" before leaving her with the French first lady and departing with President Macron.
Of course, the issue of his son's meeting with Russian lawyer Natalia Veselnitskaya came up. "It's not the alpha and the omega of politics, but a moment of truth", he said. He said Washington and Moscow are now working on a second cease-fire in an area he labeled "a very rough part" of Syria.
"I think all around he's going to have a pretty good time in France", Sire says. That's what I do. He has also said nobody would vote for Carly Fiorina, his Republican rival for the nomination, because of her appearance.
Macron told media: "We have a lot of discrepancies, obviously, with Russian Federation, but in the current environment, especially in the Middle East, it's a necessity to work together". "We look very much forward to it", he added.