rom the perspective of international relations theory our emphasis on migrant communities beyond borders allows us to contribute to a growing interest in diaspora politics--scholarship examining the extent to which nativist or ancestral ties lead migrant populations to influence policies in their homeland (., Shain and Barth 2003; Sheffer 2003). And by privileging human networks, we highlight the importance of mechanisms other than formal institutions for transmitting information and for sanctioning defection. Following a brief literature review, the argument linking migrant networks to cross- national investment is developed and hypotheses are derived in section 2. Section 3 discusses the.