The purpose of the drafters of the 14th Amendment was to define once and for all who belongs to the American political community, including the children of former slaves. Their language was deliberately broad and positive, unlike the Civil Rights Act of 1866, which used a more restrictive formulation. The intention was to prevent citizenship from depending on ancestry, race, or inherited status.
Sen. Lot Morrill (R-Maine), a key supporter of the 14th Amendment, explained that the birthright citizenship provision was not innovative legislation, but the affirmation of a "grand and fundamental principle." He stressed that the abolition of slavery demanded a clear rule on who was an American citizen.