...unless states pass (enforce, rather) laws that conflict with the supreme law, in which case those laws are void. I suggested above that abortion bans should be properly viewed as violative of the Fourteenth Amendment--not under some murky fundamental rights substantive due process thingy, but rather as denying women the equal protection of the laws. <--The equal protection clause is an actual part of the Constitution, not a penumbra. But as a professed Originalist, I'm sure you believe that we are free to discriminate against women because the purpose of the 14th Amendment was to protect newly freed slaves.