A U.S. senator is pushing for Nvidia's CEO to appear before Congress. The focus? Explaining how the administration greenlit chip sales to China. This isn't just about semiconductors—it's about the hardware powering everything from AI datacenters to crypto mining rigs. Nvidia's high-performance GPUs have long been the backbone of mining operations, and any shift in export policy could ripple through the entire industry. With Washington tightening tech restrictions, the hearing could reveal whether exceptions were made and why. For miners and blockchain infrastructure projects relying on cutting-edge chips, regulatory clarity matters. Will this testimony reshape how hardware flows into global markets? That's the real question worth watching.