Which government entity is responsible for overseeing changes to Social Security laws?

The U.S. Congress is responsible for overseeing changes to Social Security laws because it is the legislative body of the federal government tasked with creating and amending laws. Congress has the authority to propose legislation regarding Social Security programs, including their funding and benefits. Any changes to laws, including those related to Social Security, must be debated and passed by both houses of Congress—the Senate and the House of Representatives—before being signed into law by the President.

The other entities, while they may play important roles in the administration or implementation of Social Security programs, do not have the legislative authority that Congress does. The Social Security Administration administers the program and implements the laws, but it does not have the power to change them. The Department of Labor is focused on workplace regulations and labor-related issues, not specifically on Social Security law changes. Therefore, Congress is the correct answer as it is the body that directly enacts changes in legislation concerning Social Security.