Heather Steans, a Chicago Democrat, said. Taxing and regulating pot, she said, would create jobs and generate an estimated $350 million to $700 million a year in tax revenues for the debt-ridden state. The hearing generated some hard feelings by marijuana opponents who weren’t allowed to testify. Riverside Green Rush police Chief Tom Weitzel represented the Illinois Association of Chiefs of Police, which opposes the measure. Barbara Brohl Abel Uribe / Chicago Tribune Barbara Brohl, the czar of Colorado’s marijuana program, discusses her state’s experience in legalizing marijuana during a hearing to legalize marijuana in Illinois on April 19, 2017. Barbara Brohl, the czar of Colorado’s marijuana program, discusses her state’s experience in legalizing marijuana during a hearing to legalize marijuana in Illinois on April 19, 2017. (Abel Uribe / Chicago Tribune) “I don’t know why they didn’t reach out before this and ask us for our opinion and see if there’s some compromise,” he said, “because our officers are the ones doing the enforcement.” Sponsors said opponents and advocates would have ample opportunity to testify at future hearings. Brohl, who heads Colorado’s Department of Revenue, said there are about 3,000 licensed marijuana businesses in her state, about half medical and half recreational. License holders undergo extensive background checks, she said, and individuals are also allowed to grow up to six plants for their own use. Some Republican lawmakers on the panel expressed concerns about public safety and how the industry operates largely with cash, because federal regulations discourage normal banking and credit card use.