Kaillie Humphries, world's best bobsledder, wants to compete for US at Beijing Olympics. Here's why she may not.

CARLSBAD, Calif. — Kaillie Humphries’ skin is like a canvas, the dozens of tattoos that cover much of her body reflecting her feelings about her family, her sport, herself.

It is fitting, then, that for her most recent one, Humphries chose the word “Strength,” etching it in bold, script letters across the back of her right leg, just above her knee. Strength is what has gotten her to where she is, both in the sport of bobsled, where she is the most successful female driver ever, and in life.

Less than three months before the Beijing Olympics begin, the Canadian-born Humphries is effectively stateless, her hopes of competing at the Winter Games in limbo.