"...and secure the blessings of liberty to ourselves and our posterity..."
This confirms that our liberty is not only for ourselves but also for all future generations of American citizens (that's what 'posterity' means) - Therefore - it is un-Constitutional to deny an unborn American citizen their human rights no matter how far along they are in their development. ALL FUTURE AMERICANS are protected.
Rights of the preborn.
We in America are being judged for the "blood that is upon our hands."