MBE Rules · Constitutional Law
Market participant exception
The rule
When a state acts as a market participant (buying, selling, or directly hiring) rather than as a regulator, it is not subject to the DCC and may favor its own citizens. Limits: cannot impose downstream restrictions on subsequent transactions.
In plain English
When a state is buying or selling goods/services, it can prefer its own residents without violating interstate commerce rules.
Worked example
A state university buys computers and chooses a local company over an out-of-state one. This is allowed because the state is acting as a buyer, not a regulator.
Memory hook
Market Player, Not Referee. States can favor locals when buying or selling, but can't control the game's future plays.
The trap
Students think: Any state action is exempt if it's economic. Wrong, because only actions as a participant are exempt. The actual test is: Is the state acting like a private player?
How examiners test it
The MBE loves: state sells goods, adds condition on resale. Trap: thinking it's allowed. It's not, because downstream restrictions aren't protected by the market participant exception.
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