Well, here is what Cruz proposed back in 2013 regarding the H1B visas, partly to fill shortages in highly skilled labor. He also wanted to increase their pay, probably as a dis-incentive to just hire cheap foreign workers.:
See E (2)(b) http://www.judiciary.senate.gov/imo/media/doc/Cruz4-(MDM13526).pdf
“have at least 2 years experience in an occupation designated by the Bureau of Labor Statistics as experiencing a shortage of labor throughout the United States.â”
Never, ever depend of Bureau of Labor Statistics or for that matter any federal bureaucracy to be up-to-date on any subject which is important and critical.
This same bureaucracy told USCIS to ignore postings on social media by applicants for K1-Fiancee visa! That is how Tashfeen Malik, the Jihadi bride was approved by the government, and cost us 14 American lives brutally murdered in San Bernardino.