Brazil has been in political turmoil over the Petrobras oil scandal, which has linked many officials in Dilma Rousseff's governing Workers' Party to kickbacks.

On Friday, the prosecutors who uncovered what has turned out to be Brazil's largest corruption case ever have called for tougher prison sentences and more legal powers in order to crack down on the illegal actions that have ended up costing the country's taxpayers more than the annual budget for education and health combined.

The top federal prosecutor's office (known as PGR) sent Congress proposals to stiffen penalties for corruption to up to 25 years in prison.

The prosecutors are seeking legal reforms to hasten the arrest of corruption suspects and to allow them to seize incriminating assets before they can be hidden away.

Prosecutors further proposed reducing Brazil's long appeals process, which often times allows criminals to simply get off.

The investigation into the multibillion-dollar kickback scheme, which has been called "Operation Car Wash," has led to the indictment of many executives from Brazil's top builders.

Forty-seven politicians have allegedly received the dirty money.

As reported by Reuters, Deltan Dallagnol, the lead prosecutor involved in the probe, said, "The Car Wash case has angered Brazil, but it has not reduced corruption or impunity in the country."

Dallagnol and his team of prosecutors have charged the treasurer of the ruling Workers' Party with corruption for soliciting donations from executives that have been accused of funneling money from Petrobras contracts to politicians.

The Petrobras scandal, coupled with the nation's recent economic downturn, led last Sunday to protests by approximately 1 million people across Brazilian cities.

The PGR announced its desire for anti-corruption measures to be made two days after Rousseff announced her own steps to counter corruption.

The Petrobras scandal has seriously marred Rousseff's popularity and placed the Workers' Party in a politically bad situation.