> Why is manufacturing so special? As opposed to something like software?

I assume that dollar will be strong if people want to buy stuff from the US, which requires using the US currency. Software indeed is a strong sector. I'm just not sure (as due to my ignorance) if they compensate sufficiently the trade deficit. For instance, if advertisers use Instagram in Europe, they wouldn't need the US dollar to pay for the service, right? If there's no virtual export happens, I'd assume there won't be any need for the US currency either.

> Also, manufacturing in the US is growing not shrinking. For a long time.

What about market share? I remember that the US had more than 65% of the manufacturing marketshare 25 years ago. Actually, I'm more concerned about the long-term national security and prosperity of the US, and I think they are tied to a robust manufacturing sector. But that's different topic.