A few days ago, i read a thread by exexexpat.. the discussion turned to political correctness. IMHO, this issue applies as well.

Even if they are citizens of the country, they committed a crime (breach of law)that jeopardize the country or country's image. Now, how can you allow someone who has done something wrong to your country (or its people) to elect a member of the government who will make laws that shall be abided by EVERYONE?