Lawmakers in Washington are preparing to take a deeper look at the booming sports betting business, zeroing in on how it could be reshaping competition and trust in games across the country. Sen. Marsha Blackburn, who leads the Senate Commerce Subcommittee on Consumer Protection, Technology, and Data Privacy, has scheduled a May 20 hearing to dig into the issue. The session will explore how legalized betting, now widespread, is influencing both pro leagues and college athletics. Rapid expansion of legalized sports betting Since the U.S. Supreme Court struck down the Professional and Amateur Sports Protection Act (PASPA) in 2018, states have moved quickly to legalize wagering. What used to be tightly controlled has turned into a $165 billion industry spanning 39 states and Washington, D.C., with betting now just a tap away on mobile apps and newer prediction-style platforms. Growing concerns over integrity and oversight That rapid shift is raising alarms .…