Republican presidential contender Tom Tancredo on Monday said "it's not impossible" to deport the estimated 12 million immigrants living in the United States illegally. Such action would take years and would be difficult but could be accomplished, he said. The Colorado congressman, however, argued that tougher border security and a crackdown on employers would reduce the need for mass deportations and encourage such immigrants to return to their native countries willingly. "It's attrition through enforcement," he said. Tancredo described his views on illegal immigration and other issues during a meeting with Des Moines Register editors and reporters. Illegal immigration is...