Agencies may be strongly affected by the judiciary's use of its powers of judicial review and statutory interpretation. Agencies may have their statutory authority expanded or contracted by judicial interpretation, or their decisions may be overruled because improper procedures were employed in making them. OSHA and the Federal Trade Commission (FTC) have often had their actions challenged in the courts. Other agencies, such as the Federal Reserve Board and the Bureau of the Mint, have little contact with the courts because their operations do not give rise to issues of the sort normally handled by the judiciary.