Honestly, I'm not worried about this any more than most of the things Trump is doing but I think it is good to remind ourselves of trade-offs.
My understanding is that Trump is proposing a yearly $100k fee for corporations that import workers using the H1B program. That's per employee, per year. The idea is that this will discourage the importing of high skilled workers and instead encourage hiring domestic workers. On the surface this makes sense.
Here's the deal. Out-sourcing exists. I think we have seen a trend to out-source for decades and I don't see that letting up. The cost of employees has steadily grown over time thanks to the US governments at different levels. This creates a disincentive to hire employees and instead higher a outside firm. Smart entrepreneurs have smartly started companies in lower wage / high skilled nations for decades. This has grown over time.
To me, this trend will only increase and this change from Trump will only speed it up. I'm sure others have been talking about this. After all, many hate Trump and find all kinds of reasons to oppose him. Often areas that are in direct contradiction to their own politics and history. But still, this seems like an obvious tradeoff.
Its kinda funny because people that oppose raising the minimum wage because of the effects it has on the number of jobs and the costs of goods are in support of things like this. And the inverse is true. People that support the minimum wage oppose this action by Trump. Its kinda fun to watch both sides prove that its all about power and ideology is just a tool they use when they need it.