The story 'came out' to shake the gay money tree. Same reason the 'men in little girl's bathrooms' came out.
Willie Sutton said you rob banks because that's where the money is... this is the same.
Disagree. Remember that the National Enquirer, where the story came out, is owned by a big Trump supporter. Unless there's some duplicity going on, I don't think he'd want to shake the money tree for HRC.
Same reason the 'men in little girl's bathrooms' came out.
That's more plausible, what with this LGBT thing usually lumped together. But most of the "LGBT" money comes from male homosexuals, not transgenders, and the thinking here is that the large majority of gays out there oppose the "choose whatever gender bathroom makes you feel good" idea.