Which presidential candidate achieved national celebrity status as an advocate of consumer protection laws?

Ralph Nader

Explanation:

The answer for the given question is Ralph Nader.

Ralph Nader marks his presence in various fields. He is an American political activist, an author, a lecturer, and attorney,

He is a son of Lebanese immigrants, migrated to the United States.

Ralph Nader studied at Princeton and Harvard universities.

He was also awarded the Gandhi Peace award, Horchow Award for Public Service by a Private Citizen.