President Trump’s Treasury used its seldom-invoked crisis tools to prop up Argentina. The centerpiece is a $20 billion currency swap line between the US and Argentina’s central banks reuters.com – effectively a short-term dollar loan facility. In parallel, Treasury officials have directly bought pesos in open markets to blunt the currency’s slide. Bessent announced these steps on Oct. 9 after several days of intensive talks in Washington with Economy Minister Luis Caputo reuters.com aljazeera.com. On Truth Social, Bessent hailed Argentina’s “strong economic fundamentals” and Milei’s tough austerity measures. He vowed the US is “prepared, immediately, to take whatever exceptional measures are warranted” to stabilize the peso and bond markets washingtonpost.com aljazeera.com.