Culturally Diverse Populations: A Case Study

What ethical dilemmas can international psychologists face in working with culturally diverse populations? What steps can psychologists take to better evaluate psychological disorders among culturally diverse populations?
There are many ethical dilemmas that international psychologists face when working with culturally diverse populations. The list below though not exhaustive but have been potential dilemmas that international psychologists face during the execution of their services in a culturally diverse population:
Linguistic competencies- A case in point of such a situation is where immigrants travel in host community and want to use the health opportunities of that community. The medium of exchange for the host community is mainly English
References
Congress, E.P. (2004). Cultural and ethical issues in working with culturally diverse patients and their families: The use of the culturagram to promote cultural competent practice in health care settings. Retrieved from http://www.hispanichealth.arizona.edu/cultural%20and%20ethical%20issues%20working%20w%20diverse%20patients%20culturagram%20(2).pdf
Davidson, G.R. (2010). Ethical psychological practice with geographically mobile individuals and groups. In S.C. Carr (Ed.), The psychology of global mobility (pp. 61-84). New York, NY: Springer Science.
Dialogue in behavioral health research ethics (June 25, 2013). Cultural competence with Jean Campbaell, PHD and James Dubois, PHD. Retrieved from https://www.youtube.com/watch?v=-WZB7kdYYlE
Dr. Larsen (2014). Voice thread: Ethics culture in cross-cultural research. Retrieved from