Subject: Re: The ballroom, another Trump FAIL
The judge found no statutory provision giving the President the authority to accept outside donations to fund this project. The President has no inherent Constitutional power to build buildings on federal land - any authority he has would have to be in executing a law that Congress has passed.

The government was unable to point to any such law. Do you know of one?

Which would be why all that needs to happen is for Congress to appropriate exactly 1 penny to the renovation of the ballroom. There's your statutory authorization.