He defended his son's decision to meet a Russian lawyer to get compromising material on Clinton by saying it was "standard" practice in politics.
Trump, meanwhile, has appeared more than pleased at his reception here.
Trump also spoke about the US' withdrawal from the Paris Climate Deal.
Video footage posted on the French government's official Facebook page showed Trump, French President Emmanuel Macron and their wives chatting after their tour of the museums at Les Invalides.
Trump then, with his free hand, engages Mrs Macron in a handshake too, simultaneously shaking the hands of both Macrons at once.
Europe 'in battle mood' over Trump's steel threat
His point was that it doesn't make sense to talk about bilateral trade deficits in a multilateral world, the official said. European countries would prefer a multilateral solution on steel, he said.
"You know, you're in such good shape", he said, before repeating the observation to her husband.
"As far as my son is concerned, my son is a wonderful young man", Mr Trump said.
In the end, even though Trump couldn't escape what he calls "this Russian Federation thing", Sire is convinced the scandal won't completely rain on the president's parade.
He also said "the United States remains committed to being a leader in environmental protection".
Trump, who is on a two-day visit to France, will serve as guest of honour at France's Bastille Day national military parade on the 100th anniversary of America's entry into World War I. "You're going to have a very, very peaceful and lovely Paris".
Handshake aficionado and President of the United States Donald Trump on Friday sustained his art of the grip for a duration never before seen on the global stage. And I'm coming back.
"On this 14th of July, we celebrate France, we celebrate what unites us", Macron said in a very brief speech.