There are a lot of villains in this story: Big Clinton, Union “Bosses”, Republicans, on and on.
The GOP understands how important labor unions are to the Democratic Party. The Democratic Party, historically, has not. If you want a two-sentence explanation for why the Midwest is turning red (and thus, why Donald Trump is president), you could do worse than that.
With its financial contributions and grassroots organizing, the labor movement helped give Democrats full control of the federal government three times in the last four decades. And all three of those times — under Jimmy Carter, Bill Clinton, and Barack Obama — Democrats failed to pass labor law reforms that would to bolster the union cause. In hindsight, it’s clear that the Democratic Party didn’t merely betray organized labor with these failures, but also, itself.