The Fourteenth Amendment to the U.S. Constitution
"No State shall make or enforce any law which shall abridge the privileges or immunities of citizens of the United States; nor shall any State deprive any person of life, liberty, or property, without due process of law; nor deny to any person within its jurisdiction the equal protection of the laws."
Do you believe in the equal protection of the laws?
Do you believe that any State can outlaw free speech, or religious liberty, or the right to petition government? Why would the right to life, which is the penultimate right, be less important than those rights?
If a fetus is a person then so is a child. So do you believe that a child can be deprived of the right to vote?