Grand juries are kept secret. We had Congressional investigations that went nowhere. It is a good thing that Congress is not involved any further. We will see what happens, but there is no way you have the information or knowledge to rule it out. IMO there is an active investigation into the Clinton Foundation. It is just as good as your opinion.
When I don't hear "leaks" from the U.S. Justice Department in THIS administration (and I put "leaks" in quotes because many of them are deliberate leaks of false information), I actually feel confident that they are doing their jobs well.