HCR Update from Mark Sanna: Kathleen Sebelius, the secretary of health and human services, has solicited sizable donations from the Robert Wood Johnson Foundation and H&R Block, the tax preparation service, as part of a multimillion-dollar campaign to ensure the success of President Obama’s health care law, even as a leading Senate Republican raised questions about the legality of her efforts. The foundation is expected to contribute as much as $10 million, while H&R Block is expected to make a smaller donation of about $500,000.