Which Secretary is responsible for overseeing labor in the United States?

The Secretary responsible for overseeing labor in the United States is Hilda Solis. She served as the Secretary of Labor from 2009 to 2013 under President Barack Obama. In this role, Solis was tasked with addressing issues related to labor standards, workplace safety, and rights of workers, as well as overseeing the various programs designed to improve labor conditions across the nation.

The other individuals mentioned held different positions within the cabinet. Kenneth Salazar served as the Secretary of the Interior, Ray LaHood was the Secretary of Transportation, and Steven Chu held the position of Secretary of Energy. Each of these secretaries focused on specific areas of governance unrelated to labor issues, thereby highlighting Hilda Solis's unique role as the chief overseer of labor matters in the federal government.