Why? Once concluded, the only result would be to send a strongly worded letter to the perps and their enablers. The GOP is too weak to do anything, which makes each and every one of the rotten worthless wretches just as guilty as zero, lerner and the rest.
Say, the Attorney General for the State of South Carolina issued an arrest warrant for Lois Lerner because he presented evidence to a grand jury that resulted in indictments that citizens of South Carolina were illegally targeted by the IRS, and then the IRS destroyed evidence covering up their crime, and then the Justice Department refused to investigate criminal allegations as part of the continuing cover-up.
As a first step, the SC AG issues an arrest warrant for Lerner, and because of reciprocity asks the DC police to make the arrest. It would be almost impossible for them not to comply with a valid warrant.
If they refused, the wheels would really come off the wagon, and we'd be in the middle of a Constitutional crisis, and headed towards Civil War II.