According to the White House 2019 budget proposal that was submitted to Congress on Monday, "[US] Begins transition to commercialization of low Earth orbit and ends direct federal government support of the International Space Station in 2025," a press release outlining key elements of NASA's budget for the 2019 fiscal year beginning October 1, 2018.
"Begins a new $150M program to encourage development of new commercial Low Earth orbital platforms and capabilities for use by the private sector and NASA."
The proposal includes $10.5 billion for a US funded platform orbiting the Moon, known as the Deep Space Getaway.
President Donald Trump’s budget proposal boosts overall funding for NASA in 2019 to $19.9 billion, a slight increase from this year’s $19.6 billion.