Wait, why did they tweet to Biden, McCain, and Ariana? They're not on the board, they're not known advocated for the company, and they didn't just make public statements about Theranos. That's just bizarre.
The Huffington Post recently published an op-ed by Holmes, which was tweeted out by Huffington: https://twitter.com/ariannahuff/status/654312511794212864
Senator McCain apparently visited the lab "last night" (as of today). Also, Arizona is the first state to allow people to get all the kinds of tests Theranos does without a doctor's note, and McCain had something to do with that:
https://twitter.com/SenJohnMcCain/status/654714209360437249
http://www.washingtonpost.com/news/wonkblog/wp/2015/07/02/fd...
Joe Biden visited the Theranos lab in July: http://www.usatoday.com/story/tech/2015/07/24/biden-visits-t...
Nothing wrong with having powerful friends -- including all the government and military people on Theranos's board -- but making such an early, blatant appeal to political authority instead of some kind of scientific or health authority, when the controversy is exactly about the scientific part...that doesn't feel like a convincing rebuttal.