(CNN)When the Republican candidates finally stopped comparing hand sizes and started talking about some serious issues in last week's presidential debate, we were reminded that America's immigration issue won't be solved just by building a huge wall along the Rio Grande. In particular, the candidates argued over how to address the issue of H1-B visas, which allow foreign workers skilled in "specialty occupations" to work in the United States for up to six years, and whether hiring those workers takes away jobs from Americans. Sreedhar Potarazu Donald Trump readily acknowledged that his businesses have hired foreign workers, but he said he opposes the program nonetheless. "I know the H1-B...
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