2 canonical passages across 2 cases, quoted by 11 opinions in total. These passages cluster together because the same opinions keep quoting them side by side — they state parts of one doctrine. The anchor passage is from Northwestern States Portland Cement Co. v. Minnesota.
| # | Case | Flag | Canonical passage | Citers |
|---|---|---|---|---|
| 1 | Northwestern States Portland Cement Co. v. Minnesota Anchor | green | “impose a tax which discriminates against interstate commerce ... by providing a direct commercial advantage to local business.” | 8 |
| 2 | Boston Stock Exchange v. State Tax Commission | green | “follows inexorably from the basic purpose of the clause” | 3 |
A red or yellow flag on a member means the underlying case has negative treatment — for those, check the case page before relying on the passage.