Andrew Lelling says the couple is facing a "substantially higher" prison sentence.
The couple's law firm recently represented the University of Southern California, which prosecutors argued could create a conflict of interest.
Court documents indicate that USC may sue the actress and husband Mossimo Giannulli in connection with the college admissions scandal.
Before he and wife Lori Loughlin were snared in the college admissions scandal, the fashion mogul told The Hundreds how he pulled a fast one as a young man.
People left scathing reviews about Olivia Jade Giannulli’s highlighter palette and the brand eventually pulled it from the site.