Mueller could easily put him under deposition though.
Meanwhile, the House Intel committee has requested both Comey memos and the tapes Trump was talking about, if they exist. I suppose if the WH hasn't given any sort of records by the 23rd, they can force the WH to hand over the tapes. They did the same with Nixon and at the same time, set a precedent.
Can they though? How exactly do you go about forcing someone to hand over tapes that may or may not exist?
Then the WH has to prove that they don't exist, right now, nobody (besides Trump), seemingly not even WH staffers, know whether they exist or not.
BTW, lost in all the recent chaos,
Puerto Rico is doing a vote this Sunday whether to become a state, become independent, or status quo. Since Trump and the Republican Congress (especially Trump) are desperately looking for some kind of achievement, this is an opportunity dropping right into their laps.
And before anybody says that it'll be a Democrat stronghold and give the Dems a leg up, their Governor is Republican, and they'll have to work for it to get votes. Besides, theres no REAL reason to deny them statehood if they wished to.
Can they though? How exactly do you go about forcing someone to hand over tapes that may or may not exist?
Send in the popo, basically? You get yourself a warrant and set to ransacking until you find what you're looking for, or don't and declare their existence prefixed by the non (with whatever ramifications that may have for statements made previous). Not exactly sure who the cops would be in this case, but *shrugs*
Usually you just throw out a subpoena and your target either capitulates or finds themselves in a delightful legal hell of a mess, though. More extreme stuff isn't often needed, as far as I'm aware. At that point you're either innocent and handing over the whatever ain't no thang, or you're not and your ass is already cooked and refusing can only turn it from well done to charcoal. Seem to recall cooperation being one of those things folks like to leverage for plea bargaining, actually.
I don't think it quite works that way with the WH. I know they forced the Nixon Adminstration to give up the tapes, but I have no idea if they'd have to resort to a warrant.