Final answer:
The political cartoon refers to the Chinese Exclusion Act of 1882, criticizing its discriminatory nature and questioning America's commitment to liberty and equal treatment.
Step-by-step explanation:
The political cartoon refers to the Chinese Exclusion Act of 1882. The cartoon depicts a Chinese laborer outside the "Golden Gate of Liberty," which symbolizes the entrance to the United States. The act barred Chinese immigrants from entering the country, while allowing other groups like communists and "hoodlums" to enter. The cartoon criticizes the discriminatory nature of the act and questions America's commitment to liberty and equal treatment.