I agree with you in principle, but how can you have an apolitical discussion on a topic that is fundamentally and inseparably political? It's a conversation on treason, presidential decisions, exile, intelligence organisations... It's always been political. Hypothetically the president might want to pardon Snowden and then change his mind when he is in the country, then yes I'd like to discuss his motivations. And people have been burned by this man before so I can't blame their biases.