Sorokin received a Bachelor of Arts degree, cum laude, in 1983 from Yale College.

He worked in private practice at the law firm of Mintz, Levin, Cohn, Ferris, Glovsky and Popeo P.C., from 1992 to 1994.

[3] He received a hearing before the United States Senate Judiciary Committee on February 25, 2014.

[5] On June 5, 2014, Senate Majority Leader Harry Reid filed for cloture on the nomination.

On June 9, 2014, the United States Senate invoked cloture on his nomination by a 52–33 vote.