“....the kindred blood which flows in the veins of American citizens, the mingled blood which they have shed in defense of their sacred rights, consecrate their Union...”
In Madison’s time. Yes. Now. No.
The oldest bloodlines are yet the bastion of our liberties...all descendants of Northern European religious dissenters centered around the middle English Puritans, Scots Conventioneers, Scots Ulster-men, Huguenots, German and Dutch Palatines/Baptists, etc. Their leadership provided by Virginia cavaliers steeped in traditions of ancient Greece, Rome, Anglo-Saxon common law.
The newbies are less so with each wave of immigration. The Irish Catholics, the Italians, East Europeans, the Asians east and west, and now the 3rd world peasant classes from Somalia and Latin America.
Hardly the stock of republican independence and virtue.
Just look at the demographics of the two parties.