The sensible and not-at-all xenophobic and/or racist GOP Convention attendees welcomed the delegate from Puerto Rico with boos and shouts of "USA!" The "lady from Puerto Rico," as RNC Chairman Reince Priebus put it, tried to join in on the "USA!" chant to no avail. It seems like the GOP's "overtures to women and Latinos," a supposed centerpiece of the convention in Tampa, is going just as planned.
UPDATE: As several commenters have pointed out, it appears as though these chants could be from angry Ron Paul supporters, aimed at whoever they're mad at now and not at the delegate from Puerto Rico.