As a blockchain analyst tracking regulatory shifts, I break down the groundbreaking GENIUS Act passed by the US Senate. This federal stablecoin legislation mandates 100% reserves (cash or Treasuries), creates a two-tiered监管 system, and potentially unlocks trillions in Treasury demand. Discover how this impacts DeFi innovation, USD dominance, and why Trump's USD1 stablecoin escaped restrictions – complete with my proprietary链上数据 analysis on the political undercurrents.