Executives from Major League Baseball, the National Basketball Association and the PGA Tour went to the statehouse Tuesday to ask for a 0.25-percent "integrity fee" if Rhode Island lawmakers bring sports gambling into the public sphere.
The Supreme Court struck down a federal law Monday that made most sports gambling illegal.
The leagues said they should collect a fee because they create the source of the betting and are responsible for protecting it from fixing.
Senate Finance Committee Chairman William Conley, a Democrat, said he wasn't convinced by their arguments.
The leagues also asked the state to share data it collects from the bets and said they would license their official statistics.
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