The book "Ethnic Lobbies and US Foreign Policy" (2009) states that several ethnic special interest groups are involved in pro-immigration lobbying. Ethnic lobbies also influence foreign policy. The authors write that "Increasingly, ethnic tensions surface in electoral races, with House, Senate, and gubernatorial contests serving as proxy battlegrounds for antagonistic ethnoracial groups and communities. In addition, ethnic politics affect party politics as well, as groups compete for relative political power within a party". However, the authors argue that currently ethnic interest groups, in general, do not have too much power in foreign policy and can balance other special interest groups.