This undated artist's rendering provided by the San Francisco Municipal Transportation Agency shows the platform of a proposed 1.7-mile light rail station that would run from Chinatown to the train ... more 
This undated artist's rendering provided by the San Francisco Municipal Transportation Agency shows the platform of a proposed 1.7-mile light rail station that would run from Chinatown to the train station South of Market St., in San Francisco. While President Obama is calling on Congress to approve $50 billion for long-delayed transportation projects natiowide, several mayoral candidates are calling on San Franciscans to suspend the subway line. (AP Photo/San Francisco Municipal Transportation Agency) less 
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Associated Press | Photo By San Francisco Municipal Transportation Agency
Sat, Sep 17, 2011 4:47 PM EDT