Marsupial

Marsupials represent the clade originating from the last common ancestor of extant metatherians. Like other mammals in the Metatheria, they give birth to relatively undeveloped young that often reside in a pouch located on their mothers' abdomen for a certain amount of time. Close to 70% of the 334 extant species occur on the Australian continent (the mainland, Tasmania, New Guinea and nearby islands). The remaining 100 are found in the Americas -- primarily in South America, but thirteen in Central America, and one in North America, north of Mexico.

Question: except for​ opossums it is hard to find marsupials in the western hemisphere
Answer: yes