President Donald Trump's tweets declaring transgender people unwelcome in the armed forces have plunged the Pentagon into a legal and moral quagmire, sparking a flurry of meetings to devise a new policy that could lead to hundreds of service members being discharged. Months after officially allowing transgender troops to serve openly in the military, the department may be forced to throw out those who willingly came forward after being promised they'd be protected. For more details, see this Military.com article.