Final answer:
The Privileges and Immunities Clause can be found in Article IV, Section 2 of the U.S. Constitution and is further addressed in the 14th Amendment. It protects citizens' rights when they are in states other than their own.
Step-by-step explanation:
The Privileges and Immunities Clause is found in the Constitution under Article IV, Section 2. This Clause ensures that states do not discriminate against citizens from other states by granting them the same protections and entitlements as their own citizens. Additionally, this concept was expanded upon with the passage of the 14th Amendment, which includes a similar clause in its Section 1.
This Amendment clarifies that no state shall make or enforce laws that would abridge the privileges or immunities of United States citizens and mandates equal protection under the laws. Notably, the 14th Amendment's Clause has also been associated with the right to travel freely between states, as established in Supreme Court cases such as Saenz v. Roe in 1999 and relates to post-Civil War issues regarding citizenship and equal rights.