### Question
How is the term northern tier States defined?


### Answer
The term **northern tier States** is defined in *43 U.S.C. § 2003* as the following:

> the States of Washington, Oregon, Idaho, Montana, North Dakota, Minnesota, Michigan, Wisconsin, Illinois, Indiana, and Ohio

#### Citation:
  - *43 U.S.C. § 2003*
  - Heading: **CHAPTER 38-CRUDE OIL TRANSPORTATION SYSTEMS**

