Complex sentence: In a June 2011 essay in "The New York Times Magazine", Vargas effectively revealed his status as an "undocumented immigrant" in order to promote dialogue about the immigration system in the US.
Split into simpler sentences: In a June 2011 essay in "The New York Times Magazine", Vargas wrote he is an "undocumented immigrant". He effectively revealed his status in order to promote dialogue about the immigration system in the US.