New York City Mayor Bill de Blasio Joins Mayors Against Illegal Guns, National Bipartisan Coalition Of Mayors Committed To Reducing Gun Violence – New York City Mayor Bill de Blasio today joined Mayors Against Illegal Guns, the national bipartisan coalition of mayors across the United States fighting for common-sense gun laws that will save lives by keeping illegal guns out of dangerous hands. Mayor de Blasio pledged his administration would aggressively pursue measures both locally and in Washington to combat gun trafficking and illegal gun sales. The mayor committed to working with New York City’s congressional delegation to advance new laws increasing penalties for straw purchases of guns, and increasing coordination between state and federal authorities to keep guns out of the hands of people with severe mental illness and those convicted of domestic violence.