Washington, DC (LifeNews.com) -- Senator Charles Grassley, a pro-life Iowa Republican, has sent a letter to Donald Berwick, the rationing advocate who President Barack Obama appointed to become the administrator of the Centers for Medicare and Medicaid Services, asking him about his lifetime health care.Republican members of the Senate, who did not get a chance to hold a hearing or vote on Berwick thanks to the recess appointment, are concerned about Berwick's ties to the Institute for Healthcare Improvement. The nonprofit organization received $12.2 million in contributions and grants in 2008, the Examiner indicates, and Berwick received $2.3 million that...