The Spanish parliament enacted a law several years ago introducing tax benefits during a limited period of 6 years for foreigners making more than 60000€ a year in order to attract talent. The result of such law was that they attracted the talent of Zidane, Bechkam, Kaká or Cristiano Ronaldo who pay less taxes than Messi or Raúl for a comparable net income. That law has been modified this year to revert to the previous situation against the will of the soccer clubs. Players negotiate with clubs their earnings before taxes, so the increase in taxation is at the expense of the clubs. Do you still think that parliament and justice surrender to the corporate driven sport world?
Retroactive application of law (and in particular punitive laws) introduces very serious concerns about uncertainty in the legal system. I'm not an expert in legal matters, but if criminals (including terrorists) are judged according to the law at the moment of their offense and not at the moment of the trial is because there must be constraints for making laws retroactive.
I'd like to see sport events free of doping and corruption. But to me it seems that sports authorities are unable or unwilling to do so and try to involve ordinary justice to escape their own responsibility. Sports justice administration should be separated from ordinary justice. If not, well... then I'd like someone to take FIFA to the courts for allowing France and not Ireland to play the 2010 FIFA World Champs