Leonardo DiCaprio met Donald Trump to discuss the economic boost "green jobs" could give the US economy.
The actor met with the president-elect, his daughter, Ivanka and other members of Mr Trump's team to discuss how focusing on renewable, clean energy could create millions of jobs.
The Oscar-winning actor is an avid campaigner for fighting climate change and preserving wildlife. His recent documentary, Before the Flood, addresses the dangers of climate change.
After today's 90-minute meeting, the actor gave the president-elect a copy of the documentary and Mr Trump reportedly promised to watch it.
Mr DiCaprio had given a copy of the film to Ms Trump at a meeting last week.
Terry Tamminen, chief executive of the Leonardo DiCaprio Foundation, said: "Today, we presented the president-elect and his advisers with a framework - which LDF developed in consultation with leading voices in the fields of economics and environmentalism - that details how to unleash a major economic revival across the United States that is centred on investments in sustainable infrastructure.
"Our conversation focused on how to create millions of secure American jobs in the construction and operation of commercial and residential clean, renewable energy generation."