It IS in the Constitution if you actually look. You have to go PAST amendment 10, though 
Amendment 14, Section 1:
“All persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens of the United States and of the State wherein they reside. 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.”
The relevant phrase is (emphasis mine), “nor shall any State deprive any PERSON OF LIFE, LIBERTY, or property, without due process of law;”
If Ron Paul concedes that life begins at conception, abortion violates the 14th Amendment. It’s very clear to not say “nor shall any State deprive any CITIZEN”, but person. Since that life has not committed a crime, a state incapable of depriving it of its life and liberty. Again, this is using Ron Paul’s logic on abortion, and again, he contradicted himself.
It’s addressed by amendment in the Constitution as a federal right to individual liberty, the 10th amendment has no bearing.
