But abortion isn’t in the Constitution.
Correct, and that is the constitutional point about Roe v. Wade that many chose to ignore.
If the Constitution did not grant Congress the power to legislate abortion then why is the Supreme Court hearing abortion cases?
The Constitution also did not grant Congress the power to legislate marriage.
Look again. It is right next to free WiFi.
Amendment 14: 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.