When it comes to the R and D partisans, double standards are the norms. Regardless of what my guys does, real or perceived or not, you defend him and regardless of what the other guy does, real or perceived you crucify him. Let's face it, to a partisan of either party, what my guy does is always right, pure at heart and what the other guy does is always wrong and evil.
That is politics in today's America. Did Obama know about the IRS, I don't know. Did Christie know about the bridge closing, I don't know. But I will admit that. There is only one way to find out the truth, appoint an independent council or investigator with the power to dig even if it becomes political embarrassing. Is there a there, there in either of these cases, I don't know. But I probably will never know about the IRS, Christie's bridge, there is a better chance there of the truth coming out. But it won't be easy to get at.
Let's face it, democrats don't want to find out the truth one way or the other with the IRS and republicans don't want to find out the truth one way or the other with Christie's bridge. But each side wants as much dirt and scandal on the other side as possible. Truth be damned.