No American should ever speak to anyone in the FBI for AY reason.
We didn’t enter the Capitol but a friend of a friend who was near us got their friendly FBI visit.
My response if they show up will be “Please give me your card. My attorney will contact you.”
Yep. If the police or FBI come along to ask you a few questions, just tell them you’ll be glad to answer as soon as you can bring an attorney to a future meeting.