Discussion:
Some challenges that HR face when the company goes national is culture, education, economic systems, and political-legal systems. It would probably be better for the company to hire host-country nationals to fill most of the foreign positions. This is because they can more easily understand the values and customs of the local workforce. It would have HR learning new ways of training to accommodate those people of different cultures.
Reference
Noe, R. A., Hollenbeck, J.R., Gerhart, B., & Wright, P.M. (2011). Fundamentals of human resource management (4th ed.). Chicago, IL: McGraw-Hill.