Forbes has compiled a list of the 400 richest Americans. The list is littered with sports team owners. Topping the list are 14 NFL owners. Among them is Atlanta's own Arthur Blank. Blank, a co-founder of the Home Depot, purchased the Atlanta Falcons in 2002 and owns the team's future MLS franchise. His net worth is estimated at $2.2 billion. Here is how he stacks up against other franchise owners: