### Question
How does the law define major portion?


### Answer
Under *16 U.S.C. § 839f*, **major portion** is defined as:

> provided by regulations issued by the Secretary of the Treasury.

#### Citation:
  - *16 U.S.C. § 839f*
  - Heading: **CHAPTER 12H-PACIFIC NORTHWEST ELECTRIC POWER PLANNING AND CONSERVATION**

