Two Portland area residents are suing Kaiser Permanente for screening them for HIV -- along with about 6,500 other Northwest members -- without seeking their permission. The plaintiffs -- identified in a federal lawsuit as Barbara Kelley of Multnomah County and William Pearse of Clackamas County -- are asking a judge to approve the suit as a class action suit that could seek $6.5 million or more from Kaiser for the apparent misstep.