EDITOR’S NOTE: NJ Cannabis Insider is hosting a day-long conference and networking event Sept. 15 at the Crowne Plaza Princeton, featuring many of the state’s leading power players. Tickets are limited. U.S. Sen. Cory Booker kicked off a Senate hearing on marijuana Tuesday by calling for an end of the federal ban on cannabis and declaring: “Federal cannabis prohibition has failed.” Booker, who convened the hearing as chair of the Senate Judiciary subcommittee on criminal justice and counterterrorism, said years of evidence showed no benefits but plenty of harm from what he called “a festering …