Trump is about the only person who believes Duckworth could not serve as President. He raised the same objection to Ted Cruz, and everybody pointed out at that time that being born to an American citizen parent who registers the birth with the State Department is enough. She was actually born to a US service man!
I think Trump may consider her unworthy because she's half Thai. Trump likes White men.
Your last sentence gave me a belly laugh. I know what you meant, but that made my day.
It's high past time that we start electing Americans to congress and the presidency who put America first instead of their political party. For way too long we have been electing Republicans and Democrats who happen to be Americans instead of Americans who happen to be Republicans and Democrats.