Implied powers
The doctrine of implied powers is a principle of statutory interpretation which states that a legislative body implicitly has competence in matters ancilliary to its explicit stated authority.
In United States federal law, the docrine is based on a general authority provided in the US Constitution: Congress shall have power to lay and collect taxes, duties, imposts, and excises, to pay the debts, and provide for the common defense, and general welfare of the United States.
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