CONCORD - Colossus retailer Wal-Mart drains government resources because its low-paid, under-insured or non-insured workers have to rely on public subsidies, such as school lunch programs and Section 8 housing, according to a congressional report Rep. George Miller released here Monday. With supporters of a March ballot measure to ban Wal-Mart superstores and other "big-box" businesses in unincorporated Contra Costa County flanking him, Miller, D-Martinez, ripped the Arkansas-based corporation for creating "downward spirals in communities," violating child labor and workplace safety laws and "paying wages below industry averages." The report, which the Democratic staff of the House Education and Workforce...