When you play with fire, you're bound to get burned. The IMF has put Argentina on official notice that its fraudulent economic data places its standing with the organization at risk. It's nice to see an international body enforcing rules for rogue players. The funny part is the hypocrisy of the IMF's main sponsor - the United States.
Argentina underreports its annual inflation by 14% or so by private estimates. Compare that to ShadowStats' estimate of the U.S.'s CPI, which is underreported by about 4% right now. America has a ways to go to catch up to Argentina's statistical flights of fancy. Don't expect the IMF to enforce any kind of action against the U.S. once our economy starts hyperinflating.