Earlier quoted context omitted.
The fact that the institutions you are born under (like government) are real and race isn't ( http://www.vox.com/2014/10/10/6943461/race-social-construct-... ). Are you suggesting India become the 51st state of America?
All your reasons why race isn't real is simply because legal/cultural definitions of it can change dependent on legal and social norms. So can the idea of "Americanness" - either laws around citizenship/work permission/etc, or cultural/social norms around this.
That isn't a particularly unclear definition.