SAN FRANCISCO (AP) -- David Frias works two minimum-wage jobs to squeak by in one of the most expensive cities in America. Come New Year's Day, he'll have a few more coins in his pocket as San Francisco makes history by becoming the first city in the nation to scale a $10 minimum wage. The city's hourly wage for its lowest-paid workers will hit $10.24, more than $2 above the California minimum wage and nearly $3 more than the working wage set by the federal government. It won't put much more in Frias' wallet. But it gives him a sense...