The Insular Cases are SCOTUS cases regarding rights of people in U.S. territories. They’re considered U.S. citizens from birth, but they don’t have the same constitutional rights or representation as citizens who live in one of the 50 states.
Research:

Charles Goodyear and Vulcanized Rubber
48:22

SYMHC Classics: Penicillin
42:45

Behind the Scenes Minis: Dorothy Everywhere
20:00