What is the purpose for the privileges and immunities clause?

Answer 1

Both clauses apply only to citizens of the United States. These clauses have proven to be of little import because other constitutional provisions have been used to settle controversies. The privileges and immunities that are protected under Article IV include the right to receive protection from state government; the right to acquire and possess all kinds of property; the right to travel through or reside in any state for purposes of trade, agriculture, or professional endeavors; the right to claim the benefit of the writ of Habeas Corpus; the right to sue and defend actions in court; and the right to receive the same tax treatment as that of the citizens of the taxing state.This clause forbids a state from unjustly depriving citizens from other states of any rights derived from state citizenship solely on the basis of nonresidence