Immigrant couples often abandon Breadwinner/Supportive Spouse strategies in favor of economic interdependence when they arrive in the United States. What is one reason why couples do so?

they are adjusting to a new economic class

Explanation:

Economic interdependence refers to being dependent on your significant other to pull both of your economic resources together. Based on the information provided within the question it can be said that one of the main reasons for this is that they are adjusting to a new economic class. Moving to a new country requires sacrificing a lot and can be hard to find economic stability for a long time. Therefore couple both work and depend on each other economically.