In spite of what you are told by the unions and Bush-haters, and I haven't heard Ross Perot whining about the "giant sucking sound from Mexico" lately, the US has more workers than ever, higher income per family, and a higher standard of living than ever before. The feared Mexican trucks have not been killing Americans in droves, and Wal-mart is opening more and bigger stores in Mexico.
Buying stuff from these low-wage countries keeps US prices lower, and the wages paid in those countries will improve their standard of living.
The CAFTA countries are very tiny, and represent only one percent of our trading volume, so all of the bitching about CAFTA is mostly hot air.