Chinese nationality
Before the handover, some pro-democracy Hong Kong politicians, such as Margaret Ng, Emily Lau and Christine Loh attempted to use their British citizen passports to enter Mainland China because they were denied a Home Return Permit, hence denied from entering Mainland China. Those politicians, however, are still Chinese nationals under the Chinese nationality law; acquisition of Chinese nationality of ethnic Chinese residents born in Hong Kong is involuntary, although they may choose to relinquish their Chinese nationality if they hold citizenship of other countries, except for the British National (Overseas) status and the British citizenship obtained in the British Nationality Selection Scheme.