WASHINGTON (AFP) - Paunchy Americans should consider diets or health clubs, because suing restaurants over fatty fare will be off the menu if a bill the US House of Representatives passed becomes law. The House voted 236-139 for the so-called "Cheeseburger Bill," which would shield restaurants and food producers from Americans who put on weight with junk food and then take legal action over the negative health consequences. The bill's author, Republican representative Ric Keller of Florida, argued that such lawsuits are not only frivolous, but harmful to the US economy. "We're talking about protecting the single largest private-sector employer...