Been interviewing a ton of QA/SDET candidates over the last few weeks, and a challenge is that so few (regardless of immigration/legal status) seem to be open to working with many different languages/tech in any given day - meanwhile switching between areas that historically may be perceived to be within coding, product management, ops.
It's a challenge finding people that fluently can navigate between all those areas. I strongly believe the future of QA is in filling out this void that is - usually - left behind when you have Product/Dev/Ops working together; nothing encompasses all disciplines but good QA folks.
It's just as likely that although some jobs may be sent back to India, if all wages increase, then it's a net benefit to your average American.
The more likely scenario in my opinion is American companies more aggressively moving their jobs to India and even other related business to more visa friendly countries like Mexico. My employer has already moved his QA department to India full fledge putting freeze on all QA hiring in USA. Easily 10-15 jobs lost.