President Trump has signed an Executive Order to establish a Sovereign Wealth Fund.
This is money that governments set aside to invest in particular industries. In a statement about the initiative, President Trump floated the idea that such a fund could be used to purchase TikTok, the popular Chinese-owned video sharing company that lawmakers fear is a security risk, leading to passage of a law requiring that it be sold or banned.
Read this article and perhaps this article from the libertarian Cato Institute criticizing the concept.