[falsestprophet]

"Just establishing a cap on the number of visas per company as a percentage of the workforce"

This can be gamed too. Large employers could start operating bodyshops.

Say the H1B limit was only 5% of a company's workforce. Then Walmart could sponsor 110,000 workers. Yum!Brands could sponsor 22,000 workers.

This probably wouldn't even put Infosys or Tata out of business in the US they would provide the same recruitment and management services they do now, but other companies (in this example Walmart and Yum) would be the sponsors of record.