by Ben Christopher When is a minimum wage hike of more than $11 per hour actually a pay cut? That question has dominated the debate over a current California housing bill that has riven the state’s two most powerful construction worker unions and many state legislative Democrats reluctant to get on the wrong side of either group. Assembly Bill 1751, authored by Fullerton Democrat Sharon Quirk-Silva, would kick aside regulatory barriers to building townhouses — tightly clustered, multistory homes.