Leslie Dach graduated from Harvard and is an experienced lobbyist, field organizer and media relations strategist.

FORBES: The Truth About Wal-Mart, Food Deserts and The White House

The retailer has labored in recent years to polish its image, hiring Leslie Dach, a former Democratic campaign adviser, to lead its efforts.

WSJ: Wal-Mart Ad Campaign Touts 'American Success Story'

Mr. Dach, who is leaving the company later this year, spearheaded dozens of promises to eliminate landfill waste, sell healthier food and boost the company's use of renewable energy.

WSJ: Wal-Mart Ad Campaign Touts 'American Success Story'