NEW YORK—Alan Colmes, the liberal co-host of the Fox News debate program Hannity & Colmes, lost an argument to his nephew Bryan while babysitting the 8-year-old Monday. "I wanted to stay up late to watch television, but Uncle Alan said, 'There's already too much self-parenting in America,'" Bryan said. "So I started screaming, 'Mom lets me, Mom lets me,' real loud. He gave in after, like, 20 seconds." In the past two years, Bryan has won arguments with Colmes on the subjects of Pokémon cards, Crunch Berries cereal, and steel tariffs.