What's the Kennection? #207

In Dr. Seuss's story "The Sneetches," what symbol do many of the title creatures have on their bellies?

Which suit in a deck of cards includes both a one-eyed jack and the "suicide king"?

What doo-wop group, named for a favorite plant of honeybees, made "Love Potion No. 9" a hit in 1959?

What valuable objects are regulated by the "Kimberley Process" established by the United Nations in 2003?

In what sport is a "leaner" worth two points and a "ringer" three?

What's the "Kennection"?