In August 2006, he was arrested while on holiday in Phan Thiết and held in jail in Ho Chi Minh City without trial.
[1] The government claimed that he and two others were printing anti-communist propaganda and distributing it as well as crafting a terrorist plot against the Embassy of the United States, Saigon.
[4] Under international pressure, the government released Do from jail and deported him back to the United States on 21 September 2006.
[2] He is an advocate of free elections in Vietnam under the pen name "Nam Tran" with which he posts his political papers on the internet and various Vietnamese language newspapers in the United States and overseas.
Do is a founding and senior member of the Democratic Party of Vietnam[5] In 2016, Do unsuccessfully ran for California State Assembly District 27[6]