How to stipulate liquidated damages clause in commercial contracts?

如何在商业合同中约定违约金条款？

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Moreover, the U.S. government abrogated private commercial contracts containing the so-called gold clause, which allowed creditors to receive payments in either dollars or gold.

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In other words, Congress has broad power to act under the Commerce Clause, but there has to be existing commercial activity for that to happen.

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