Per the Senate tweet, all member staffers were invited but the Dem staffers declined to participate in the staff ‘investigation’.
Per Sen. Grassley, the Dems were invited to participate in the investigation on the 19th, but declined.
https://www.judiciary.senate.gov/press/rep/releases/grassley-committee-can-and-should-investigate-ford-allegations
Have you seen a source that contradicts those Senate Committee tweets, intparent?