Trump’s response is as ignorant and as idiotic as Kelly’s question.
“Opposition to transgender people has, over the last few years, become a prominent stance among conservatives, particularly those on the further-right fringes of the political spectrum. The foregrounding of the topic has notably led conservatives to call for boycotts of prominent companies and brands that embrace the trans community in their marketing efforts, most of which had little long-term impact."
Trump was asked by former Fox News host Megyn Kelly if a man can "become a woman" in a recent interview.
www.newsweek.com
So, the hateful, bigoted right is upset with Trump because he didn’t endorse the hateful, bigoted right’s anti-transgender agenda – a failed, meritless agenda.