Comment: Before Constitution the articles of Confederation define citizen

You keep going back to the Constitution forgetting the Articles of Confederation. They define citizenship in simpler terms.

Article IV. The better to secure and perpetuate mutual friendship and intercourse among the people of the different States in this Union, "the free inhabitants" of each of these States, paupers, vagabonds, and fugitives from justice excepted, shall be entitled to all privileges and immunities of free citizens in the several States; and the people of each State shall free ingress and regress to and from any other State, and shall enjoy therein all the privileges of trade and commerce, subject to the same duties, impositions, and restrictions as the inhabitants thereof respectively, provided that such restrictions shall not extend so far as to prevent the removal of property imported into any State, to any other State, of which the owner is an inhabitant; provided also that no imposition, duties or restriction shall be laid by any State, on the property of the United States, or either of them.

I prefer this definition, which perhaps means 47% of American, paupers, vagabonds and fugitives are not entitled to all privileges and immunities.