SAN FRANCISCO (AP) - The fiercely contested board elections for the Sierra Club will be decided Wednesday in a vote that could change the direction of the nation's most influential environmental group. At stake is the 112-year-old organization's policy on immigration - a politically charged issue many club leaders have been reluctant to address. Sierra Club leaders have warned that anti-immigration advocates are trying to take over the organization and its $100 million annual budget by electing board candidates who want to restrict immigration. In recent years, an increasingly vocal faction of the San Francisco-based Sierra Club has advocated a...