[Ken H]

In 1787, there was nothing to stop a state from denying the protection of fundamental rights to their OWN citizens (much less citizens of another state) except the state constitution.

If you exclude fundamental rights from "privileges and immunities", then what required states to protect the fundamental rights of citizens of other states that it recognized for its own citizens?

[robertpaulsen]

"then what required states to protect the fundamental rights of citizens of other states that it recognized for its own citizens?"

In 1787, did the states protect the fundamental rights of citizens of other states that it recognized for its own citizens? If they did, I assume it was under their state constitution.