SALT LAKE CITY – Mexico's ambassador to the United States pressed for a political solution for the U.S. immigration problem in a visit Friday with Utah Gov. Jon Huntsman. The diplomat, Carlos de Icaza, endorsed a guest worker program for his countrymen and a fair resolution for the millions of undocumented workers already in the United States. "Building walls and fences is not the way to solve problems among neighbors," said de Icaza, whose two-day visit ended with a demonstration by the Utah Minuteman Project outside the Utah Capitol. The immigration opponents called for tougher border security and sanctions against...