Mitt Romney stuck out his hand and challenged Rick Perry to a $10,000 bet at a Republican presidential debate Saturday night, prompting Perry to decline because he is "not in the betting business." At issue was Perry's claim that he read in Romney's book "No Apology" that the individual health care mandate Romney signed into law as Massachusetts governor "should be the model for the country." "I know it came out of the reprint of the book, but, you know, I'm just saying, you were for individual mandates, my friend." That seemed to anger Romney, who responded, "you know what,...