Final answer:
Congress has the power to research for bills, focus public attention on issues, and oversee operations of executive branch agencies. Investigations may lead to public hearings, informing policy-making and shining a light on government operations. Congress utilizes these roles to maintain checks and balances within the federal government.
Step-by-step explanation:
The Congress of the United States has several roles as part of its investigations, which relate to its overarching responsibility to legislate and oversee the executive branch. First, it conducts research for bills, gathering information that can help in creating effective legislation. In this capacity, Congress acts as a policy maker by developing laws based on the needs and issues identified through research and investigations.
Another role Congress plays during its investigations is to focus public attention on particular issues. By holding hearings and public sessions, Congress can bring issues of concern to the national spotlight, thereby influencing public opinion and policy direction.
Finally, Congress is tasked with the critical function to oversee operations of executive branch agencies. This includes reviewing annual summaries of agency activities, scrutinizing agency budgets, and holding hearings where agency officials are questioned. This process serves as a system of checks and balances, ensuring that executive agencies adhere to the law and operate efficiently and effectively.
Additionally, the Elastic Clause grants Congress the ability to make all laws that are "necessary and proper" for carrying out its duties, including those related to overseeing and checking the powers of the executive branch.