On Tuesday, as teenagers swarmed the Florida legislature to advocate for gun control, Sen. Martin Heinrich (D-New Mexico) renewed a familiar call for Congress to repeal an amendment that blocks the Centers for Disease Control and Prevention from funding research into the public health effects of gun violence. I am calling for the repeal of the Dickey Amendment, which restricts the Center for Disease Control and Prevention (CDC) from researching gun violence and its effects on public health. — Martin Heinrich (@MartinHeinrich) February 20, 2018 Heinrich’s plea comes less than a week after a shooting at Majory Stoneman Douglas High School in Parkland, Fla., left 17 people dead and injured 14 others, motivating teenagers across the country to protest lax gun laws.