Final answer:
The Privileges and Immunities Clause in Article IV, Section 2 of the U.S. Constitution states that citizens must receive the same basic privileges and immunities in every state as they would in their home state, promoting interstate equality, though certain exceptions exist.
Step-by-step explanation:
The provision that says states must extend the same privileges and immunities to citizens of other states as they do to their own is found in Article IV, Section 2 of the U.S. Constitution, commonly referred to as the Privileges and Immunities Clause.
This clause aims to promote equality and unity among states by ensuring that a state cannot discriminate against citizens from other states in respect to the basic rights they would have in their own state. For example, someone from Texas would be entitled to the same sales tax rates and public protections like police and fire services while they are in New York.
However, there are certain exceptions, such as states charging higher tuition rates for out-of-state students at state universities or offering certain social services only to residents.
Additionally, this concept is also present in Section 1 of the 14th Amendment, which enhances the principle of equal protection under the law for all citizens across the states.
The application and interpretation of the privileges and immunities have been debated and defined through various Supreme Court cases, such as Saenz v. Roe, which highlighted the protection of the right to travel between states.