President Trump said again Tuesday he's working to take mortgage giants Fannie Mae and Freddie Mac public, winding down 17 years of federal control over two central parts of the U.S. housing market — a move that was cheered on by Trump ally and noted Wall Street investor Bill Ackman.

U.S. President Donald Trump said on Tuesday that the U.S. government will retain its mortgage guarantees and oversight role for Fannie Mae and Freddie Mac as he works to take the U.S. mortgage finance firms public.

On the heels of news that it could soon go “public,” Fannie Mae has launched a partnership with artificial intelligence firm Palantir. The mortgage behemoth has announced the Crime Detection Unit, an AI-powered tool created along with Palantir.