Stablecoins are cryptocurrencies designed to hold the value of a U.S. dollar. For many lawmakers on both sides of the aisle, passing a stablecoin bill seemed more feasible this year than tackling a larger crypto market structure bill, especially because stablecoins are less volatile and their value is usually tied to actual money sitting in a bank.

Sen. Elizabeth Warren is urging other Democrats not to support a bipartisan crypto regulation bill, as Democrats warn about President Trump's ties to crypto.