Jumping into one of the toughest moral dilemmas of the international economy, [San Francisco] Mayor Gavin Newsom announced his support Monday for a campaign to eliminate worldwide sweatshop labor abuse. Newsom teamed up with Supervisor Tom Ammiano and dozens of activists to announce a proposed ordinance to bar the city government from buying products made under abusive labor conditions...Criticism from the apparel industry came quickly Monday...Randy Harris, executive director of San Francisco Fashion Industries, an industry lobbying group that includes firms such as Levi Strauss & Co., Byer California and Gymboree Corp [said]..."the mayor and Supervisor Ammiano should have done their homework before slapping our industry across the face."