A federal judge has dismissed more than three dozen lawsuits against telecommunications corporations that aided the Bush administration’s warrantless spying. On Wednesday, Northern California US District Judge Vaughn Walker ruled the companies, including Verizon and AT&T, are protected under the retroactive immunity granted in last year’s Democratic-backed surveillance act. The Electronic Frontier Foundation and the American Civil Liberties Union say they plan to appeal on the grounds the retroactive immunity is unconstitutional. In a related ruling, Judge Walker rejected Obama administration efforts to dismiss a case from a defunct Oregon-based Islamic charity that says it was the target of illegal spying.