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How does a subsequent law or regulation affect performance of the contract?

Bar Exam Prep Contracts Excuse of Non-Performance How does a subsequent law or regulation affect performance of the contract?
🤔 Contracts • Excuse of Non-Performance K#147

Legal Definition

If performance of a contract is later rendered illegal by a law, the parties' performance is excused due to impossibility. If the mutually understood purpose of the contract is later rendered illegal by a law, performance is excused due to frustration.

Plain English Explanation

As of me writing this card, recreational growing and smoking of marijuana is legal in Colorado. If today you contracted with someone to sell you marijuana every month for a year, but next month Colorado changes its laws recriminalizing marijuana, then the future months of providing marijuana would be excused due to impossibility, since it would then be illegal to buy and sell marijuana.

Similarly, if today you contracted with someone to build out a business with the purpose of growing marijuana, but growing was recriminalized, performance would be excused due to frustration of purpose since the purpose is no longer legal.

Visual Aids

How does a subsequent law or regulation affect performance of the contract?
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