[3] Upon graduation from law school, Cain clerked for Judge Henry L. Yelverton of the Louisiana Third Circuit Court of Appeal.

He is a founding member and former partner of the Lake Charles-based firm Loftin, Cain & LeBlanc, LLC, where his practice focused on civil litigation in state and federal courts.

President Trump nominated Cain to the vacated by Judge Patricia Head Minaldi, who assumed senior status on July 31, 2017.

[5] On January 3, 2019, his nomination was returned to the President under Rule XXXI, Paragraph 6 of the United States Senate.

On January 23, 2019, President Trump announced his intent to renominate Cain for a federal judgeship.