WASHINGTON (Reuters) - President Bush has charmed a number of Democrats on Capitol Hill with his engaging personality, yet many have begun to revolt against what they see as his heartless proposals. On the eve of Bush presenting to Congress a recommendation to cut taxes by $1.6 trillion over 10 years, Democrats were up in arms on Wednesday, charging the package would cost too much, go largely to the rich and, despite promises to the contrary, leave a number of children behind. "There is going to be one hell of a fight over this and there should be," vowed U.S. ...