Helena Bachmann, Why More U.S. Expatriates Are Turning In Their Passports.
Time, Apr. 20, 2010.
http://www.time.com/time/world/article/0,8599,1983238,00.html
(b)
(i) 联邦公报 Federal Register
"Information on the number of renunciants from the United States can be
found in the Federal Register (http://www.gpoaccess.gov/fr/index.html), which records on a quarterly basis the number of US citizens renouncing US citizenship."
Renunciation of citizenship
http://en.wikipedia.org/wiki/Renunciation_of_citizenship
(ii) 菲尔·豪德根 Phil Hodgen
(iii) 海外美国公民 American Citizens Abroad (ACA)