Roger and his brother Hank Mozingo were North Carolina natives who worked for a trade association known as Tobacco Associates.

Roger moved to Washington to become the key administrator of the Tobacco Institute's State Operations.

In this position with the TI he was instrumental in forming and running the national Tobacco Action Network (TAN — with Jack Kelly) which recruited tobacco industry workers, tobacco farmers, distributors and retailers (and their families) to support the industry by writing letters-to-the-editor, lobbying politicians, etc.

By the end of 1984 he was one of the top three (level 2) operatives (along with David Henderson and William Kloepfer) at the Institute, and by 1988 he was Senior Vice President.

In the mid-1990s he transfered to RJ Reynolds, and became their Vice President of State Government Relations.

For more than twenty years he was closely involved with many of the industry's more notirous scams: tort-reform, smokers-rights organisation, Whitecoats recruitment, etc.