His areas of specialization include critical race studies; Black radicalism and internationalism; African American history; and Asian American studies. He is the author of Transpacific Antiracism: Afro-Asian Solidarity in 20th-Century Black America, Japan, and Okinawa (forthcoming from NYU Press in June 2013). In addition, he continues to investigate the details of U.S. colonialism toward Okinawa during the early Cold War in the late 1940s and early 1950s. Some of the findings of this long-range transnational historical research will are presented in the article titled "Occupied Okinawa on the Edge," which will appear in American Quarterly (December 2012).