[JURIST] Sixteen Latin American, Caribbean and South American governments have filed supporting briefs in a lawsuit filed last week [JURIST report] by the US Department of Justice (DOJ) [official website] challenging the South Carolina’s newly adopted immigration law [SB 20 text]. The briefs contend that the new law will "impede effective and consistent diplomatic relations," and encourage "an imminent threat of state-sanctioned bias or discrimination" of their citizens. The countries are also concerned about the detrimental effects the new law…