How does Congress maintain control over independent agencies?

In general, an agency has only that authority which has been delegated to it by Congress. Thus, Congress can control a federal agency by detailing its jurisdiction and authority, setting policy goals for the agency to accomplish in the exercise of that authority, and choosing whether it may regulate the public.

Explanation:

In general, an agency has only that authority which has been delegated to it by congress

Explanation:

several states had passed similar laws, but they were limited to intrastate businesses. the sherman antitrust act was based on the constitutional power of congress to regulate interstate commerce.

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answer-the island had airfields that the u.s. military needed.