### Question
What is the definition of investment-grade rating?


### Answer
The definition of **investment-grade rating** is as follows in *33 U.S.C. § 3901*:

> a rating of BBB minus, Baa3, bbb minus, BBB (low), or higher assigned by a rating agency to project obligations

#### Citation:
  - *33 U.S.C. § 3901*
  - Heading: **CHAPTER 52-WATER INFRASTRUCTURE FINANCE AND INNOVATION**

