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Since 1914, there has been a US law on the books that empowers the current Federal Trade Commission (FTC) to make broad enforcement of unfair or deceptive business practices:

"(a) prevent unfair methods of competition and unfair or deceptive acts or practices in or affecting commerce;

(b) seek monetary redress and other relief for conduct injurious to consumers;

(c) prescribe rules defining with specificity acts or practices that are unfair or deceptive, and establishing requirements designed to prevent such acts or practices;

(d) gather and compile information and conduct investigations relating to the organization, business, practices, and management of entities engaged in commerce; and

(e) make reports and legislative recommendations to Congress and the public. "

[1] https://www.ftc.gov/legal-library/browse/statutes/federal-tr...