Two ways for Edward Snowden to get legal protection
He can ask to be considered a refugee or claim he will be tortured if sent back

Edward Snowden strongly supports the United Nations High Commissioner for Refugees system, he told the South China Morning Post on Wednesday, although he refused to say whether he plans to apply for refugee status in Hong Kong.
Going to the UNHCR is one of two ways he can seek legal protection while he fights an expected US request for his extradition through the courts.
He can ask the UNHCR to determine whether he qualifies as a refugee. Or, he can seek protection from Hong Kong by claiming he will be subject to torture if he was sent back to his home country. The city is obliged to let him stay if the claim is substantiated.
The refugee option has become more uncertain lately because the government has yet to set out how it will address a ruling by the Court of Final Appeal in March regarding the assessment of refugees.
The court said the government cannot just rely on the UN body's judgment on whether a person is a refugee and it must assess the cases independently.