Democrats say enforcing immigration laws and cutting back on visa programs would hurt the economy and make many goods and services more expensive. That’s because the lower wages typically paid to illegal immigrants and immigrants on temporary work visas have come to subsidize parts of the economy. Oftentimes, corporate America reaps the benefits. In this series, Immigrationomics, the Washington Examiner will look at where and how illegal immigrants are finding work, as well as how corporations take advantage of visa programs to import cheaper labor. Part 3 will look at foreign worker visa programs.

President Donald Trump’s reversal of his opposition to the H-1B visa has pitted Republicans against one another over whether immigrant workers complement or compete with native-born workers.