He's mad as a lawyers letter and not going to take it anymore!

The Bernie 2016 campaign has filed an official complaint with Debbie Wasserman Shcultz, chairwoman of the Democratic National Committee. In the letter, lawyers for the Sanders campaign accuse the DNC of violating rules through joint fundraising efforts:

Specifically the Sanders campaign is accusing Clinton and the DNC of letting people who have already given the maximum to the Clinton election effort to skirt the rules.

The Sanders campaign so far has not filed a complaint with the Federal Election Commission, but instead is asking the DNC to cease and desist immediately.