Subramanian was recommended to President Joe Biden by Senator Chuck Schumer.[7] On September 2, 2022, President Biden announced his intent to nominate Subramanian to serve as a United States district judge of the United States District Court for the Southern District of New York. On September 6, 2022, his nomination was sent to the Senate. President Biden nominated Subramanian to the seat vacated by Judge Alison Nathan, who was elevated to the United States Court of Appeals for the Second Circuit on March 31, 2022.[8] On December 13, 2022, a hearing on his nomination was held before the Senate Judiciary Committee.[9] On January 3, 2023, his nomination was returned to the President under Rule XXXI, Paragraph 6 of the United States Senate. He was renominated on January 23, 2023.[10] On February 9, 2023, his nomination was reported out of committee by a 16–5 vote.[11] On March 7, 2023, the Senate invoked cloture on his nomination by a 58–37 vote.[12] Later that day, his nomination was confirmed by a 59–37 vote.[13] He received his judicial commission on April 13, 2023.[14] He is the first South Asian judge to serve on the United States District Court for the Southern District of New York.[15]
Notable cases
In October 2024, Subramanian was designated the judge overseeing the criminal case of Sean "Diddy" Combs.[16][17] Subramanian set a trial date for May 5, 2025, alongside issuing an order barring both parties from making statements relating to secret grand jury material and other non-public evidence in the case.[18][19]