The Iowa Tribe of Oklahoma opened its new Harrah’s-branded casino in April. But plans for Harrah’s to take over casino management are stalled because of a vacancy at a federal watchdog. The National Indian Gaming Commission hasn't had a chairperson since January and President Donald Trump has yet to nominate a replacement. That’s left the commission unable to carry out enforcement duties or management deals like the one in Oklahoma. Industry leaders say the vacancy risks delaying business deals and weakening oversight. It also deprives tribes of a key advocate as prediction markets threaten to encroach on the $46 billion tribal gambling industry.