When you understand that the Constitution is first a document of restriction, then it will all become clear. Congress can acquire land for the erection of forts, arsenals, dock yards, and other NEEDFUL BUILDINGS.. This means there must be a FEDERAL reason for FEDERAL possession of land. A wildlife refuge is NOT A FEDERAL PURPOSE.
I got all that down just fine. OP said the Constitution says fedzilla can’t own land. Period, no qualifications.