New Delhi, Nov. 19 -- A sweeping federal investigation exposes how shadow financiers, unlicensed money transmitters, and casino insiders helped move millions from China into Las Vegas - raising difficult questions about regulatory blind spots and the future of VIP gambling in the US.

Federal investigators have spent years tracing how money from mainland China quietly made its way into Las Vegas casinos, ultimately revealing an intricate pipeline of underground bankers, unlicensed money transmitters, and informal intermediaries who helped high-roller gamblers bring cash across borders undetected. The latest findings, centered on Wynn Las Vegas and a circle of figures operating around its VIP gambling ecosystem, have triggered one of the l...