"They are totally new Latinos in the mixture of Latinos in America," says author and Latino culture specialist Gregory Rodriguez, a Los Angeles-based fellow of the New America Foundation. "Their reason for immigrating was less economic than political. They are also more urbanized than Mexican immigrants, Salvadorans especially, and have established themselves institutionally more quickly than Mexicans.

"They also have no long-standing connection (to the U.S.) the way Mexicans historically have had, through the Bracero Program, for instance, and the relationships between Mexico and the U.S..."  LINK