From NJ.com, about the moderate-liberal Democratic mayor of Newark, N.J.: "In an interview on the Rachel Maddow Show [on Monday] night, Booker called on federal and state leaders to shut down secondary gun markets which he said are responsible for the bulk of illegal guns flowing into cities like Newark and Camden. 'If you are terrorist in America, you can go to the secondary gun market and buy a weapon,' Booker said referring to gun shows and internet sales that often do not requuire the level of background check or regulation a primary gun retailer must adhere to. About 40 percent of our guns are being sold in secondary markets,' Booker said. 'That's how the guns are coming into cities like mine.'"
More: "Booker, who along with New York Mayor Michael Bloomberg is a member of Mayors Against Illegal Guns, cited polling numbers culled by a 'Republican pollster' that said 82 percent of gun owners and 74 percent of National Rifle Association members 'believe that these secondary markets should be stopped form being able to sell people without criminal background checks.'"