Milei, who's just months into a four-year term, pledges to go where no Argentine leader has successfully ventured for three decades by deregulating the country's tightly controlled economy.
Oil slipped as broader investment sentiment soured and traders weighed signs of a weakening physical market ahead of the start of the US summer driving season.
Oil fell, hovering near three-month lows, as key market measures flashed signs of weakness. Still, futures have remained rangebound as traders await the next catalyst.