After months of public records requests, we finally obtained thousands of heavily redacted receipts by the Port of Oakland. We honed in on one for $4,500 on a poorly copied receipt. It was from a business in Houston. A quick online map search showed us the business was a notorious strip club. Another receipt led us to another business closer to home. A karaoke bar suspected to be a house of prostitution where Port clients were being entertained at the public's expense. Several nights of surveillance brought to light another discovery. Oakland Police Officers were making regular visits to this club while on duty.