I'd have to see evidence for that since it would have violated the Dred Scott decision.A little later any black man who was willing to serve in the Northern Army was granted citizenship.Under the Civil Rights Act of 1866 and then protected by the 14th Ammendment. Civil Rights Act of 1866:Still later all black folk were granted citizenship as a group. So no, your scenerio doesn't comport with reality.14th AmmendmentThat all persons born in the United States and not subject to any foreign power, excluding Indians not taxed, are hereby declared to be citizens of the United States
So they were made citizens under the concept of birthright citizenship.All persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens of the United States and of the State wherein they reside
So if Birthright Citizenship had NOT been enacted, then no person of African Descent would have been made a citizen, and then their children would not have been, etc.
Therefore, since the world has still/Much good, but much less good than ill,
And while the sun and moon endure/Luck's a chance, but trouble's sure,
I'd face it as a wise man would,/And train for ill and not for good.