Just listen to yourself here. You almost sound like an apologetic for Citizens United. What you are effectively saying is not that Bernie's proposed policies are harmful, morally wrong or detrimental to public interest, he just "can't get them done". That's not a principled opposition, it is being defeatist and apathetic.
And last I remembered, we are still living in a democracy and it is the
people who have the ultimate authority. The Supreme Court does not always have the final and unquestionable say in the law of the land - that itself would be a form of tyranny of the unelected. Supreme Court decisions, or even existing laws can be overturned through constitutional amendments as stated in Article 5 of the United States Constitution. And let's not forget that the Supreme Court overruled itself
more than 50 times on various issues, so forgive me for not being intimidated by the odds.
People may disagree who they want as President or which party should run the government, but by and large the citizens of this country
overwhelmingly support the idea of getting money out of politics. Even if Bernie isn't elected, because of the platform he has now he has been able to drag this issue into the mainstream and despite the best efforts of the media and establishment lackeys to keep it buried. And if John Oliver's recent segment about the increasing resentment among elected officials on being forced to spend disproportionate amount of time begging big donors for money instead of working on legislation is any indication, then a President Bernie Sanders might have more support on this issue than expected. Sure, a president on his own can't take money out of politics, but he sure as hell can accelerate the process. Sanders' campaign and fundraising have refuted prevailing political wisdom about succumbing to special interests as a harsh and unavoidable reality of running for office, and from this point onwards, you can be he sure as hell won't be the last to do so.