If the Republicans have nothing to worry about, this shouldn't bother them. Politics as usual.
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Clinton and 'Bama were hounded for years about Benghazi in the form of eight investigations, the last one headed by a Republican stalwart, but nothing ever emergend. No "smoking gun" was ever uncovered. In the process, both people kept their calm. Obama didn't unleash a flurry of tweets or attack the press. Clinton actually sat and testified calmly for hours.
Let's see what happens next, OK?