No surprise there. They pretty much HAVE to question him after seizing documents on a raid of his house. They need to try to justify what they have done.
Damn good thing he has the money to hire top lawyers,because I SUSPECT that if they can't find something incriminating,they will try to create it.
Seems to ME this is just a part of a major campaign by the Dims to do anything they can do to try to keep him from running for President again.
And they don't care how far they have to go or how much it costs,because unlike Trump,THEY won't be paying any law firms out of their own pockets because THEY will be spending tax dollars.