Current policy: U.S. allows more immigration (per capita) than many countries, but not as much as, say, Canada. U.S. has several programs intended to exploit f

Current policy: U.S. allows more immigration (per capita) than many countries, but not as much as, say, Canada. U.S. has several programs intended to exploit foreign workers, such as the H1B program, without really offering them a path to citizenship. These foreign workers are neither citizen nor permanent residents, but simply temporary workers, here on sufferance, and are subject to being removed from the U.S. at any time. Technology companies in particular benefit from this as it keeps technology salaries down across the board. Historical parallels - Chinese workers were imported to build the transcontinental railroad. They were paid approximately 2/3 of what white workers made, and charged for room and board. About 1/8th of them died from on-the-job accidents during the 7 years or so it took to construct the railroad. Amusing connection: the president of Central Pacific Railroad at the time was Leland Stanford. You might say that exploiting foreign workforces is in the blood of Silicon Valley.