Senator Bernie Sanders refused multiple times to answer questions from Fox News Senate Producer Kara Rowland about the FBI investigation that has reportedly come to focus on Sanders’ wife, Jane.

The case centers on Jane’s tenure as president of Vermont’s Burlington College from 2004 to 2011 and a loan application she filed in 2010 to help the school expand. Published reports allege Jane claimed $2.5 million in pledges. But as the college spiraled into bankruptcy, she reportedly raised less than $700,000 – leading the Trump campaign chair in Vermont, Brady Toensing, to ask federal prosecutors and banking regulators to investigate what he termed “apparent federal bank fraud.”

“I have seen public records, documents that show that an investigation has been started. Those records were with the Vermont Department of Education, where the U.S. prosecutors were asking the Department of Education to preserve records as part of their investigation,” Toensing said.

Sen. Sanders’ campaign manager, Jeff Weaver, did not respond to Fox News’ requests for comment, but he told Politico the couple has hired Richard Cassidy, a well-regarded Vermont lawyer and Sanders super-delegate, and Lawrence Robbins, a Washington attorney whose clients have included “Scooter” Libby, the chief of staff to Vice President Dick Cheney, who was convicted in the Valerie Prime case.

Democratic party activists said discounting the case has hurt Sen. Sanders politically, for now.

“He’s gonna get a big benefit of the doubt, particularly from his supporters,” Joe Trippi, a Democratic strategist, said. “Certainly anything that challenged that or questioned that, or changes that questioned that or put that in doubt, would be – would potentially [be] a problem for him.”