” After nearly two years of investigation without coming up with one charge why is the DoJ still investigating Sheriff Joe Arpaio?”
1) Desperation...too much time invested already.
2) They knew he would retaliate, if attacked.
3) He DID retaliate.
4) Arpaio has better than even odds he can destroy Obama.
5) Add destroy Holder (F & F).
Is it too late to tell you it was rhetorical question? LOL