State Sen. Butch Miller, R-Gainesville, is co-sponsoring a bill aimed at reforming the state’s medical malpractice system and lowering health care costs. His picture was on a mailer sent to many Hall County homes in January, asking residents to thank him for his support of the bill. The mysterious source of the mailer is just one aspect in the fight over the Patients’ Compensation Act (SB 141), which has turned out groups with vested interests on both sides of the issue, each clamoring to defeat or pass the bill as millions of dollars are at stake.