FBI and DOJ

As the hearings involving Hilary's use of private email continue a major question comes to the forefront. What happens if an FBI or a Justice Department does something illegal. The congress is supposed to have oversight responsibility to make sure that if this were to happen those responsible would be brought to justice. In order to carry out their responsibility the congress must have access to information collected by and from the FBI and the DOJ. However these two agencies can refuse to give congress the asked for information by saying it is part of an ongoing investigation and they can keep this investigation going on indefinitely. This poses a conundrum which appears to have no solution. Whether there is any illegal activity going on in the present situation has been resolved by an FBI investigation and by another investigation by the inspector generals office and normally this would be the end of it but that assumes that these two departments are not compromised. If they are not, all is well but if they are, then we have a situation where the guilty can be sheltered by law since information about an ongoing investigation cannot be revealed to congress. Regardless of the present situation, steps should be taken to resolve this in case it happens in the future.