I don't want to frame this in a victim-oppressor mindset, as though the people are being victimized. I think the people who apply for H1-B visas choose to do so based on their options. They're forgoing the opportunity cost of their time and energy for this(and the issues that come as immigrants), so they must be getting significant value out of this on the margins. It's because of the currency arbitrage opportunities they have on earning on the world reserve currency. Once the US dollar declines, currency arbitrage will no longer be valid, and H1B visas will not be in demand. However, the decline of the US dollar is not on the short-term horizon unless the US takes action that leads to hyperinflationary outcomes, such as war or a default on treasuries.