Gov. Pete Wilson will visit an unemployed orange picker and a food bank in Visalia today to underline the plight of those left destitute by the pre-Christmas freeze. Wilson is scheduled to visit the home of Concepcion Meza, who has been struggling to find enough food for his wife and 10 children. Meza, who has picked oranges since coming to the United States 18 years ago, has been out of work since December, when a bitter freeze wiped out this season's orange crop. Almost 20% of the residents in Tulare County, which was hardest hit by the freeze, were reported out of work in January.