Sanders has a point, but he is trying very hard not to point the finger at how the DNC abandoned Obama once he was elected. In fact, the DNC worked very hard throughout Congress to not only not support policies Obama had campaigned on, but made it clear that if he wanted anyone in his cabinet, they had better be pre-approved by the Clintons, hence the Clinton Redux Cabinet.
The DNC cost us the Congress in 2010 by failing to adequately support progressives, and without those kinds of people in Congress, Obama’s plans on which he ran were dead on arrival, even in a Democratic Congress. Even getting the ACA past cost him a lot when he appointed the Clinton Shill to DHHS, after she oversaw the worst public health care program in America and in her first speech, threw single payer under the bus to appease the Clintons.
So, I support President Obama but Sanders is right - he did little to close the gap between Congress and the American People, and the DNC made sure it stayed that way. Consider this: in 2008, Obama gave the Congressional Democrats a larger share of the Congressional pie, but thanks to the racists in the GOP and no significant push-back from the DNC over their overt racism, the GOP took back first the House and then in 2014 the entire Congress. Obama slowed the tide in 2012, but with no thanks to the DNC.
Obama brought people into the process, but the DNC drove them out. Do any of you remember how many progressive politicians talked about getting challenged from within the party establishment and lost funding, and then the race? I can think of a few, and I am reminded of what Rahm Emanuel, the salesman for industry of Democrats, said about Progressives in Congress: Ignore what they want, they will follow what the party tells them to do in the end. This is the attitude of the Democrats in every state I have lived in over the last 8 years - and quite frankly that has done more to keep Congress separate from Americans than even the GOP.
Sanders will find himself facing the same problems unless Americans force their local party operations to understand that if they want to Congress back, they need to run progressive Democrats because most Democrats are not into corporate cronyism that they seem to choose as candidates. Here in Oregon for example, not only did the Dems in District 1 not put up a progressive, they put up three candidates in the primary that were all products of the military/industrial complex, and were essentially no different than GOP candidate Greg Walden. And I know in other states the same thing has held true as well.
Progressives need to run for office and force their local parties to get behind them. Otherwise, the Democrats are nothing more than GOP Lite, and apparently that is just fine with the DNC. This is what Sanders is talking about, and on that Obama has never had a chance, thanks to DWS, the DNC, the DLC, and the Clintons.