Question: William T. Dzurilla served as a clerk to a former halfback nicknamed "Whizzer" in which judicial institution?
Context: War crimes witnesses to the Kosovo War (1998–99) have been victims to threats, violence, and murder.  Those who spoke out about the abuses of their side in the conflict were seen as traitors to their community, and therefore, only a few became witnesses in war crime trials.  The international institutions ICTY, UNMIK and EULEX, and national courts in Serbia and Kosovo, have all had problems in ensuring safety for testifying protected witnesses.  According to observers, one of the main reasons that the Kosovo Relocated Specialist Judicial Institution will partly operate outside Kosovo is the past failures of the international institutions to protect witnesses.  According to Carla Del Ponte, the former ICTY prosecutor, "the investigation of the Kosovo Liberation Army fighters appeared to be the most frustrating of all the investigations done by the ICTY", and stated "witnesses were so afraid and intimidated that they even feared to talk about the KLA presence in some areas, not to mention actual crimes".  She further stated that "I am convinced that UNMIK and even KFOR officers were afraid for their lives and the lives of their missions’ members.  I think some of the ICTY judges were afraid that they would become a target for the Albanians" and believes that witness intimidation seriously affected the acquitting verdicts against KLA officials Fatmir Limaj and Ramush Haradinaj.  Numerous witnesses did change their testimonies during trials, while others were killed or mysteriously disappeared.  Avni Zogiani, leader of an anti-corruption nongovernmental organization in Kosovo, said "Intimidation and even killings of witnesses are nothing new or shocking in Kosovo".  EULEX prosecutor Charles Hardaway said that "Witness intimidation, not only in war crimes but in other cases too, is happening from people with high competencies in government who are powerful".  According to Belgian author Jelle Janssens, it was reported that judges and prosecutors became terrified at the mention of high-ranking KLA officers or politicians in case files.  Del Ponte asserts that there were serious abuses of witnesses in Kosovo local criminal proceedings, and also alleged that UNMIK leaked sensitive information about witnesses to defendants, which UNMIK denied but later admitted that it had stopped some investigations into high-level perpetrators due to political reasons.  The Humanitarian Law Center concluded that a large number of acquittances were due to witnesses changing their stories, suspecting intimidation. The High Court of Sindh is the highest judicial institution of the province of Sindh.  Established in 1906, it is situated at provincial capital Karachi.  Apart from being the highest Court of Appeal for Sindh in civil and criminal matters, the Court was the District Court and the Court of Session in Karachi. Kris (Romani: "kris" ) or Kris-Romani is a traditional court for conflict resolution in the culture of Vlax branch of the Romani people.  The term derives from the Greek language, "κρίση" (judgment).  It is a key institution for enforcing the Romani Code (Romani: "romano zakono; zakonuri" ) within Romanipen.  It developed in the area of present-day Romania, during the times of the slavery, as a judicial institution of the local Romanies, in order to enforce the community cohesion and its internal balance.  After the abolition, from the half of the 19th century onwards, many Vlax Romanies emigrated in the rest of the world, bringing with them the kris as part of their cultural luggage.  More or less formal proceedings exist also among other Romani branches.  Some non-Vlax Romanies adopted this institution, like the Drzara from Sweden (originally from Serbia), in contact with the local Kalderash. The Peshawar High Court is the highest judicial institution of Khyber-Pakhtunkhwa.  It is located in the provincial capital Peshawar. The Caribbean Court of Justice (CCJ; Dutch: "Caribisch Hof van Justitie" ; French: "Cour Caribéenne de Justice" ) is the judicial institution of the Caribbean Community (CARICOM).  Established in 2001, it is based in Port of Spain, Trinidad and Tobago.  The CCJ sits at 134 Henry Street in Port of Spain. Byron Raymond "Whizzer" White (June 8, 1917 – April 15, 2002) won fame both as an American football halfback and as an associate justice of the Supreme Court of the United States. The Office of the Inspector General of Colombia (Spanish: "Procuraduría General de Colombia" ) is a Colombian independent, public institution overseeing the public conduct of those in authority or in charge of exercising a public office, and of overseeing the correct functioning of other government institutions and agencies.  The Office of the Inspector General of Colombia is not a judicial institution, it is one of the Colombian Control Institutions, alongside the Office of the Controller General.  The Inspector General is also charged with safeguarding the rights of the people, guaranteeing Human Rights protection and intervening in the name of the people in the defence of the public's interest. The Egyptian State Lawsuits Authority is an Egyptian judicial institution. William T. Dzurilla, formerly William T. D'Zurilla, is an attorney, a partner in the Boies, Schiller & Flexner law firm's Fort Lauderdale, Florida office.  He was a law clerk for Justice Byron White of the United States Supreme Court from 1982 to 1983.  He played a key role in the privatization of major state-owned businesses in Slovakia. The Reichskammergericht (] , "Imperial Chamber Court"; Latin: "Iudicium imperii" ) was one of two highest judicial institutions in the Holy Roman Empire, the other one being the Aulic Council in Vienna.  It was founded in 1495 by the Imperial Diet in Worms.  All legal proceedings in the Holy Roman Empire could be brought to the Imperial Chamber Court, except if the ruler of the territory had a so-called "privilegium de non appellando", in which case the highest judicial institution was found by the ruler of that territory.  Another exception was criminal law.  The Imperial Chamber Court could only intervene in criminal cases if basic procedural rules had been violated.
Answer: United States Supreme Court