I did my Ph.D. in Physics on an F visa, and H1B was my only option when I became a postdoc. Already on the old system, I was paid significantly more than my US citizen colleagues due to the minimum wage. I’m worried about what this rule change will do to my field, where talented postdocs are hard to find. It also never made sense to me to invest many $100k in foreign Ph.D. students to then make it so hard for them to repay part of this investment to the country.