The tech industry has become one of the biggest interests lobbying for immigration reform, for a straightforward reason: they say they can't find enough qualified workers here in the US. If the government issued more high-skilled visas, they say, they could hire immigrants to fill their vacancies — and the greater capacity would allow them to hire more US-born workers, and pay them more, as well. Some economists and others question whether that's true, or whether companies simply prefer to hire immigrant workers (over whom they have more control) rather than native-born ones.

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To read the original article: This study showed that high-skilled immigrants create jobs for Americans - Vox