The investigation by Federal Authorities into unlawful campaign donations doesn’t have a lot of meat on its bones from what I can see.
If you look at Bernie’s FEC Filings it is apparent a lot of his supporters, probably senior citizens or people unfamiliar with campaign donation limits, were making repeated, small donations which in some cases exceeded the $2,700.00 limit.
I check candidate filings to match out-of-state employees with non-resident voters. It looks like some of the people who over-donated are being paid back by the Sanders campaign.
The Feds probably won’t barge into Bernie Headquarters with automatic weapons and seize anything. I think the bad press is all that this will amount to. Bernie supporters don’t care how he wins – as long as he wins. Chalk it up to “this happens to revolutionaries.”