But the U.S. Supreme Court has been given the ultimate authority to interpret the constitution. That is, the Constitution restricts the degree to which governments may intrude in one's personal life. One result of this interpretation is that women have the right to essentially unlimited abortion access early in pregnancy. So, according to the U.S. Supreme Court, the right to have an abortion is implied in the U.S. Constitution. Everyone has the right to life.
Babies are part of that everyone.
I hope you are smart enough to understand - abortion kills children. The First Amendment refers to freedom of speech, religion, assembly and to the right to petition the government. The Declaration is a statement of principle and is not an enforceable law. There are also federal laws that specifically guarantee persons the right to life. If the latter fertilizes the former, and if there is no miscarriage, and if if the woman does not have an abortion, and if nothing goes seriously wrong during the pregnancy, then a newborn enters the world.