Final answer:
The name of the program that allowed 'liminals' to become part of human society is the Interspecies Cultural Exchange Program.
Step-by-step explanation:
The program designed to allow "liminals", or non-human beings, to become part of human society is known as the Interspecies Cultural Exchange Program. This program should not be confused with historical or legislative acts such as the Bracero Program, which was a historical agreement between the United States and Mexico that allowed Mexican agricultural workers to work in the U.S. during World War II. Likewise, the Immigration Reform and Control Act was a legislative act in the U.S. aimed at reforming immigration policies but is not related to the integration of "liminals" into human society.