Many of these roles, such as the ones where people just push buttons and send emails, could be done by Americans with just a little bit of training. But there is no incentive for Apple to train Americans or invest in their existing employees when they can just claim “labor shortage” and hire someone from India instead.
We know this works already because this is how the country worked until 1990, when they created the H1B and massively increased all other types of immigration. By 1990 the US was the undisputed powerhouse of the world, and it was built completely with native born labor.
There was plenty of offshoring that happened during the 90’s but the companies that rely on it heavily do not end up winning. In the end nothing beats Americans working in America and that’s obvious just by looking at the stock market.
The people who want to eliminate the H1B are absolutely pro-worker in my opinion. It’s a tool that’s used almost exclusively to suppress wages, the quality of the workers is almost always significantly worse than the American equivalent and serves only to boost profits for the company owners at the expense of their own workers.