Special Counsel Robert Mueller is an American attorney and former FBI director known for his role in investigating Russian interference in the 2016 U.S. presidential election. Appointed in May 2017, he led a team that examined potential connections between Donald Trump's campaign and Russian officials, as well as any obstruction of justice. Mueller's investigation concluded in March 2019, resulting in a report that detailed various findings but did not establish a criminal conspiracy between the Trump campaign and Russia. His work has had a significant impact on American politics and public discourse regarding election integrity and accountability.