The measure first cleared the Senate on 4 March and then passed through the House the following week. Due to its link to a budgetary matter, it needed another final vote in the Senate before reaching President Trump's desk.
The Chamber’s decision to investigate comes almost two months after President Javier Milei promoted the Libra cryptocurrency on his official X account.
The economic impact has increased fears of a slowdown. Goldman Sachs recently raised its forecast for a US recession to 45%, pointing to tighter financial conditions and rising trade uncertainty.