3 theories according to CNN.
1. She got edged out by the likes of Bolton and Pompeo
It’s no secret that the national security adviser and secretary of state, respectively, are foreign policy hard-liners. And that while Haley was outwardly very tough within the UN (and the Trump administration), she was reportedly a voice urging more moderation – and toeing the preferred line of establishment Republicans – in private.
2. She needed to make some money
According to Haley’s 2018 financial disclosure, she reported a significant number of outstanding debts, including somewhere between $25,000 and $65,000 in credit cards, a mortgage in excess of $1 million and a line of credit between $250,000 and $500,000.
3. She wants to run for president