The National Labor Relations Board has found merit in a union charge that Amazon violated labor law. The charge was filed in the lead-up to the first successful U.S. organizing effort in the retail giant’s history. Amazon has filed objections over the union election that led to a labor win, claiming organizers and the agency’s regional office in Brooklyn acted in a way that tainted the vote. The union lost another union election earlier this week at another Staten Island Amazon warehouse. An Amazon spokesperson says the allegations are false and we look forward to showing that through the process, a spokesperson says. The agency says it will issue a complaint against Amazon unless the retailer agrees to a settlement, and the complaint would trigger an administrative court process where both parties can litigate. . . .