"The IRS Is Building a Safe to Hold Trump’s Tax Returns"
That's misleading. It's not just Trump's, but every President's, and had been longstanding procedure, except now they are replacing a locked cabinet with a more secure system.
"It’s in a locked cabinet in a locked room that nobody’s in. You’ll need a key to the room and the cabinet to get it. We’re in the process of turning that cabinet into a safe. We keep all the returns from every president in there."