I wonder who you are, but you seem kind of paranoid.
Hillary Clinton is not worthy to be in general history book, no more than Pat Nixon. Of all there is to learn about American history, all its facets and major figures through time, you honestly think a bunch of teens have to be taught about first ladies too? Why?
Would that also include putting Melania Trump and Barbara Bush in the history books? What about the wife of Millard Fillmore?
No, time is precious and people are free to learn about what they wish on their own time. As far as mainstream studies we need to stick to essentials not minutia.
Pretty sure Barbara Bush is mentioned in 'the history books', albeit probably only a fleeting mention.
I don't really understand the background to this thread. Sounds, from the article, as if the curriculum is based on some sort of 'inspirational' great man theory of history, with specific individuals being studied as role models or something, (and an attempt at 'balance' meaning to include a token 'great woman' or two) and I don't know that I agree with that in the first place.
But I don't see how you could give a narrative account of recent history without mentioning Hilary Clinton. Even if I personally would probably be unable to resist emphasising the negative (e.g. her role in imposing a corrupt leader on Haiti, or in supporting the invasion of Iraq, and generally being yet another American imperialist).
Being the first woman with a real chance at the Presidency is worthy of a mention, at least.
The whole discussion seems to suggest that history teaching in the US, or at least Texas, is entirely politicised in the first place, apparently being some sort of project to indoctrinate future generations in "how to be American".