I never said exporting jobs doesnt cost jobs. What I said was importing foreign labor does the same AND strains our infrastructure. "IN ADDITION TO costing U.S. citizens jobs", you might want to brush up on your reading comprehension.
I'd also like to point out that exporting jobs (rather than importing workers) is actually more moral, since foreign countries where labor is cheap, tend to have a lower cost of living, so those workers are likely to be able to support themselves on low wages in those foreign countries. Imported cheap labor is unlikely to be able to support themselves on low wages while living in this country.