Re: What am I missing here?
The senators want to know what subsidies have been offered to the company in exchange.
When these subsidies have been subtracted from the "investment", what's left is the actual investment.
To complicate matters, this "investment" isn't really investment if it doesn't pay local contractors for the build, use locally sourced kit or employ locals in the day-to-day running.
And then there'll be things like projected sales to overseas customers, and the value of patents they might create at the plant and which country will hold them (and therefore, potentially, profit from them). Also, internal sales to US customers might be cheaper, which adds national value to the project.
It sounds to me like this is the kind of detail they are after - essentially, the long-term value of the investment, which may even be negative if the subsidies offered are high enough (although one would hope that there are other tangible benefits in the long run if it turns out that the US are basically paying for this company to set up shop there)