After years of hiding the fact that he was an undocumented U.S. immigrant, Pulitzer Prize-winning journalist Jose Antonio Vargas is now making it his mission to re-frame the conversation about immigration reform in the United States.

Vargas described his life as an undocumented immigrant in a New York Times article published earlier this year. He was sent from the Philippines to live with his grandparents in California at the age of 12 and has never lived in the U.S. as a citizen or a legal alien.

There are an estimated 11-12 million undocumented immigrants living in the U.S., and under the Obama administration a record 800,000 people have been deported in the past two years.

In response to the heated immigration debate in the U.S., Vargas recently launched a project called “Define American”. The goal of the campaign is to share stories of other immigrants living illegally and fearfully in the United States.

Tell us how you define "American." Send us your thoughts and comments on Facebook or Twitter using hashtag #AJStream.

Here are some of the social media elements featured in this episode of The Stream: