Many people from many different countries to enter the united States seeking protection because they have had or are having some kind of persecution and fear for his life, there are 5 different ways approved for the united States to suffer this persecution: it Can be by Race, Religion, Nationality, Membership of a particular social group, or political Opinion.

Differs from the way of entering the united States and logically from the decision of the Judge assigned to his asylum can be affirmative or defensive, and also depending on your asylum application can be submitted online or by postal mail. 

The asylum process so it is for people who do not face any form of expulsion process. The process of defensive asylum is for people who face some form of expulsion process. The processes of expulsion involved an opinion of the government of the united states. UU.