Brazil's federal prosecutor has challenged the constitutionality of the so-called World Cup law which was signed last year by Brazil President Dilma Rousseff.
The law gives FIFA guarantees it says it needs to organize the 2014 World Cup.
Federal prosecutor Roberto Gurgel has questioned four articles of the World Cup law. In his filing, Gurgel contends the law violates citizens' constitutional guarantee to equal treatment, as well as provisions of Brazilian tax law.
Put in place last year, the legislation was delayed several times in heated debates in Brazil's Congress, where critics argued the national government was giving soccer's world governing body too much power.