I thought El Salvador also said he was MS-13. But my point/question: is there a known way of proving that someone belongs to some group. For example how do you prove that I am a member of the PortaJohn fan club?
There was a a time, say 15 years ago and before, I'd have said no way. However I think the last three elections have taught us that sure anyone can be elected President. Can any do a good job ... not so much.