You might be confusing the specific with the substantive.

You might be confident the intended with the substantive. The intended effect is to raise American salaries. The substantive that is the MAGA’s H1-B and larger immigration policies will discourage STEM researchers to come the US. This will hurt US scientific research and is likely the most substantive long term effect on the nation. Any potential effects on tech workers salaries pales in comparison. This potential also includes lower developers salaries as American companies lose their competitive edge.