It came three weeks after Mr Trump announced he was withdrawing the US from the 2015 Paris climate accord aimed at curbing carbon emissions and combating climate change.

In the video Mr Schwarzenegger, the former governor of California, said: "I'm here with President Macron and we are talking about environmental issues and a green future."

Mr Macron gave a thumbs up and said: "And now we deliver together to make the planet great again. Thank you."