My Mexican-American identity crisisAn opinion piece written by CNN Contributor Ruben Navarrette, this is a personal reflection on the tense relationship between the U.S. and Mexico and the way that relationship adds tension to the lives and identities of Mexican-Americans. As he notes, "For Mexico, the relationship with the United States is complicated and filled with hard feelings. Most Americans probably never give a thought to the fact that, in 1848, the United States invaded Mexico and forced its leaders to sign over half their territory at the point of rifle. But for Mexicans, who think in terms of centuries, not minutes, the reminders are everywhere."