Birthright Citizenship Act of 2017 This bill amends the Immigration and Nationality Act to consider a person born in the United States "subject to the jurisdiction" of the United States for citizenship at birth purposes if the person is born in the United States of parents, one of whom is: (1) a U.S. citizen or national, (2) a lawful permanent resident alien whose residence is in the United States, or (3) an alien performing active service in the U.S. Armed Forces. This Act shall not be construed to affect the citizenship or nationality status of any person born before the date of its enactment.