subpoena. he and donald trump junior are supposed to appear sometime in september before the judiciary, there appears at least on the surface, very little concern about the fact that robert mueller is working with a grand jury. >> we have the new report about a new grand jury. earlier we had heard there was a grand jury to investigate former national security advisor michael flynn. why two issues that are pretty connected? >> the grand jury looking into flynn was already in place and looking into that before robert mueller was appointed special counsel. that grand jury also is in alexandria. today traffic was good, they know getting from downtown d.c. to alexandria and back on a regular basis can be a arduous task. robert mueller is using a grand jury already sitting so he