Congressman who throttled gun violence studies says he made a mistake Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email With a big budget deal in the works between President Obama and congressional leaders, Congress has a chance to change the ban on CDC research into gun related health issues. ( KAREN BLEIER/AFP / Getty ) Produced by Ellen Frankman Produced by PRI and WNYC