This is all old news. There was no need to spend 7 million more just to say the same thing. It was pure politics and a complete waste of money.
You're right
The difference between Benghazi and the many Americans killed in a number of terrorist attacks under Republican administrations is just which party is in office.
It's actually worse than simple Politics. It's a distraction of Conservatives. While Fox News keeps people focused on Democrat scandals rather than the Democrat-Left agenda, the Left is freed to advance their agenda.