There are varying interpretations of the original intent of Congress, based on statements made during the congressional debate over the amendment. While the Citizenship Clause was intended to define as citizens exactly those so defined in the Civil Rights Act,Congressional Globe, 1st Session, 39th Congress, pt. 4, p. 2893. Senator Reverdy Johnson said in the debate: "Now, all this amendment provides is, that all persons born in the United States and not subject to some foreign Powerfor that, no doubt, is the meaning of the committee who have brought the matter before usshall be considered as citizens of the United States ... If there are to be citizens of the United States entitled everywhere to the character of citizens of the United States, there should be some certain definition of what citizenship is, what has created the character of citizen as between himself and the United States, and the amendment says citizenship may depend upon birth, and I know of no better way to give rise to citizenship than the fact of birth within the territory of the United States, born of parents who at the time were subject to the authority of the United States." which had been debated and passed in the same session of Congress only several months earlier, the clause's author, Senator Jacob M. Howard of Michigan, phrased it a little differently. In particular, the two exceptions to citizenship by birth for everyone born in the United States mentioned in the Act, namely, that they had to be "not subject to any foreign power" and not "Indians not taxed", were combined into a single qualification, that they be "subject to the jurisdiction" of the United States, and while Howard and others, such as Senate Judiciary Committee Chairman Lyman Trumbull of Illinois, the author of the Civil Rights Act, believed that the formulations were equivalent, others, such as Senator James R. Doolittle from Wisconsin, disagreed, and pushed for an alternative wording.Congressional Globe, 1st Session, 39th Congress, pt. 4, pp. 2890, 2892-3, 2896.
