EB-5 Q&A:Why does USCIS state that EB-5 “investment capital cannot be borrowed

The EB-5 Investment Capital Requirements section of the USCIS website states that “Note: Investment capital cannot be borrowed." I have read through the regulations governing the EB-5 visa and consulted with a regional center, and it seems that EB-5 funds CAN come from a loan and be borrowed. Why would the USCIS state that EB-5 “investment capital cannot be borrowed?”

EB-5 Q&A:How can an EB-5 investor invest in a non-profit project

I am from Colombia and I am interested in participating in the EB-5 program. Can I get an EB-5 visa if I invest $500,000 to $1 million in an existing private school in Texas (new-5 years old) that is a not-for-profit organization that is growing and creating jobs? What are the additional rules or regulations that pertain to investing in a not-for-profit project?