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The post itself makes clear that the Secretary of State is making these demands on behalf of the administration she represents. Indeed, the Secretary of State serves at the pleasure of the President and no doubt doesn't say or do much of anything in terms of official policy and/or statements without the tacit approval of the boss.
Anyway, if the title had been "Secretary of State Clinton demands China investigate and disclose past abuses", or something to that effect, even this minor quibble wouldn't be there. I just don't like the "Hillary" thing. It makes it seem as if what is to follow is aimed at HRC personally (which would be wrong) when in fact it's not.