Don Jr. gets my vote, followed by Eric. Ivanka is way down on the list until she either divorces Jared or he renounces liberalism publicly and through deeds. I think we need about 28 years of Trump (4 Donald, 8 Don, 8 Eric, 8 Barron) to reverse the damage the left has done to our republic since 1992.
The only sibling of Donald J. Trump who is an Art. II, ยง1, cl. 5 natural-born citizen is Tiffany Trump.