Michael Halpern : We need scientific research on gun violence to inform policy . Halpern : The NRA pressured Congress to end gun violence research at CDC . They didn't want the government funding it, so they lobbied congress not to fund it. Also , we must open our minds to findings that disagree with our beliefs , he writes .
Michael Halpern : We need scientific research on gun violence to inform policy . Halpern : The NRA pressured Congress to end gun violence research at CDC . Researchers free from conflicts of interest should work with policy makers , he says . Also , we must open our minds to findings that disagree with our beliefs , he writes .