Argentina’s Economy Is Struggling. Why Is the White House Stepping In? | Big Take (youtube.com)
Perhaps mostly just to get Milei through the upcoming election (people have had enough of his austerity, it's a referendum on his 2 year presidency). As long as he continues strict measures, US is saying, they'll support Milei. Milei doesn't have the relationships with other politicians, he's sort of ignored them, and they're the people who can get the vote out. He's ‘vilified’ Congress. His sister is facing bribery allegations (government gives a contract to a private company and the politician takes cutbacks).
Both Trump and Milei have problems with all the other Latin American leaders. Lula, Petro, Steinbaum.
Milei is very popular among Conservatives in the US.
Secretly, Argentina might have agreed to replace their Chinese debt with US bonds. Shale gas, lithium are in Argentina.