The debate was focused on whether or not to protect undocumented aliens in the United States because they do "jobs Americans won't do" – for example agriculture, food processing, and unskilled construction. But no attention has been paid to protecting jobs Americans are doing from documented alien labor. Despite the loss of +/- 200,000 US technology jobs, the United States Citizenship and Immigration Services (USCIS) proceeded to awarded 85,000 "temporary high skilled knowledge worker visas (H1-B) last year
In 1970 a high school diploma implied that the graduate had mastered basic arithmetic, could read and write a coherent paragraph demonstrating comprehension of what they'd read and possessed some knowledge of basic science. Maybe not enough to be admitted to Harvard or UC Berkeley but certainly enough to begin to build a middle class life – an auto mechanic, building trades apprentice, chef, miner, farmer, police officer, fireman, US military member or factory worker. Fast forward to 2016 there are still hundreds of careers that can be built on a 1970s high school education including new careers like network administrator or computer programmer -- jobs that pay +/- $70K or more a year – after only about a year of technical training. The problem is that a high school diploma in 2016 does not require the same mastery of basic math, English, science and civics as it did in 1970.
The more goods and services Americans buy from fellow Americans the faster the economy grows. This domestically fueled growth makes our economy less vulnerable to international economic pressures.