Assuming from the point of view of a founder, would they want to loan $500k to $1M to a US government-sanctioned project likely to return -100% to 3% over at least 5 years? If I had that money to spare AND was keen on founding a company, I'd more likely literally burn half the money for heating, and use the remaining half for a startup in my own country first.

For a VC looking to immigrate, maybe...

Edit: Or do you mean getting US VCs into said US government-sanctioned projects, so that the US can take EB-5 money and use it on VC funding? That's quite brilliant.