### Question
How does PROGRAMS AND ACTIVITIES define affected source?


### Answer
Under *42 U.S.C. § 7651a*, **affected source** is defined as:

> a source that includes one or more affected units

#### Citation:
  - *42 U.S.C. § 7651a*
  - Heading: **SUBCHAPTER I-PROGRAMS AND ACTIVITIES > Codification**

