Maybe they don't believe Cruz is eligible to run?
Cruz isn’t eligible. He knows it, Trump knows it, Palin knows it, the RNC knows it, and the state GOP operations know it. The only people who don’t know it are the unwashed masses, who have been duped.
It's all speculation at this time, until we see who the endorsement would be. What I don't get, if it's true, would be Cruz's campaign saying negative things about Palin. At this juncture, she is the ONLY Republican woman who once in a leadership role didn't back down on conservative principles.
I would assume that if Palin does support Trump, it's because there's an insiders take about Cruz's problems that they know won't go away.
I think that may be it.
Obabma helped draw up Senate resolution that confirmed John McCain is natural born US citizen
https://www.govtrack.us/congress/bills/110/sres511/text
Constitutional lawyer: Cruz ‘right’ about citizenship
http://thehill.com/blogs/blog-briefing-room/news/266175-constitutional-lawyer-cruz-right-about-citizenship
Lawyer on birther lawsuit BREAKING! Cruz “Birther” Suit Attorney Suspended From
Practice?
http://www.behindenemylinesradio.us/2016/01/breaking-cruz-birther-suit-attorney.html