ADVANCE FOR USE MONDAY, MARCH 13, 2017 AND THEREAFTER-Dr. Garen Wintemute, an emergency room physician at the University of California, Davis, Medical Center, shows the website of the Bureau of Alcohol, Tobacco and Firearms, on a computer in the hospital in Sacramento, Calif., on Thursday, March 9, 2017. On the day President Donald Trump was inaugurated, Wintemute got a call from a colleague, who reported that the White House had removed a climate change page from its website. Fearing that federal data on gun violence might soon similarly vanish under a president with close ties to the National Rifle Association, Wintemute called together his partners at the UC Davis Violence Prevention Research Program. He then ticked off the records he wanted to archive. (AP Photo/Rich Pedroncelli)[/caption]