In a normal White House, most decisions are made before they reach the Oval Office, either by some deputy or some committee. They fight with each other for power, listen to the constituents with money, and nod to the bureacracies.
Some people thought Dick Cheney told Bush what to do. Some thought Nancy made decisions when Ron's memory began to falter. So it would not be unusual to have someone whispering in the "President's" ear, much as he whispers in the ears of little girls. I don't think Chief of Staff Ron Klain is a real power broker; he's too busy playing on Twitter. We know for sure it's not lightweight Jill Biden. Her job is to take the fool's hand and lead him offstage when he gets confused.
I'm gonna go with Barack Obama for several reasons.
First, he admitted in a TV interview that he would enjoy pulling the strings.
“If I could make an arrangement where I had a stand-in, a frontman or frontwoman, and they had an earpiece in, and I was just in my basement in my sweats, looking through the stuff, then deliver the lines, but somebody else was doing all the talking — I’d be fine with that."
Second, the fool's press secretary, Jen Psaki, let it slip when she was asked about leaving her job:
“It’s an honor and a privilege. And I love working for President Oba…President Biden every single day."
(And then she made an incredible statement about Biden: "I love spending time with him, hearing what’s on his mind." Sure you do, Jen.)
Third, follow the money. America's beloved cardboard merchant, who lost his mind and then his wife, discovered $100 million in his sock drawer one day and decided to give it to ... Barack. Technically, he gave it to Barack's foundation, but, wink wink, does anyone remember Hillary's foundation? How the money stopped flowing when she could no longer grant favors?
Well, Jeff didn't give it to the Biden foundation, did he? Does Creepy Joe even have one? Oh.