French President Emmanuel Macron and German Chancellor Friedrich Merz have called for cross-border cooperation in regulating crypto-assets, focusing on stablecoins. The initiative aims to align Europe's MiCA framework with the U.S. GENIUS Act to ensure global interoperability and prevent fragmented national systems. Both frameworks emphasize 1:1 reserves and transparency but differ in handling foreign issuers. The EU mandates local licensing for foreign entities, while the U.S. suggests an equivalence regime for compliant foreign stablecoins. The next 12–24 months are crucial for harmonizing these frameworks to foster a globally regulated stablecoin ecosystem.