Gene Gregory and Wayne Pacelle are the odd couple of American agriculture.

"We were adversaries. Some might say bitter adversaries," says Pacelle, president of the Humane Society of the United States.

These days, though, he and Gene Gregory, president of the United Egg Producers, are allies, walking shoulder to shoulder into offices on Capitol Hill, asking Congress to approve new rules for egg farmers.

(READ the story from NPR News)