Although the media will be consumed with the presidential campaign, the identity of the next Oval Office occupant won’t really matter, at least not from the standpoint of making Washington work again. The real source of the problem is Congress, specifically the Senate, and to narrow it even further, the filibuster. When invoked — and it’s invoked often — the filibuster forces the majority party to amass 60 votes, rather than the simple majority ordinarily required to pass legislation.