Sanders has over $23 million in unsourced, potentially illegal campaign contributions that he has been unable to explain. He’s received three separate letters from the FEC questioning thousands contributions including identifying thousands in excess of $2,700 (the individual limit), and he had $10,465,912 in aggregated $35 donations all made on a single day from a single zip code in DC that cannot be explained (that would mean 299,026 donations were made on one day from that zip code, when DC’s entire population is about 660,000)
On Becoming Anti-Bernie
Robin Alperstein

Wait, WHAT?!? How have I never heard of this before?