Principle and hypocrisy aside, however, the president’s statement has some validity. Let’s be honest: Right-to-work laws do weaken unions. And de-unionization can lead to lower wages.

But there is another factor at play: having a job in the first place. In right-to-work states, the average wage is about 10 percent lower. But in right-to-work states, unemployment also is about 10 percent lower.

Higher wages or lower unemployment? It is a wrenching choice. Although, you would think that liberals would be more inclined to spread the wealth — i.e., the jobs — around, preferring somewhat lower pay in order to leave fewer fellow workers mired in unemployment.

Think of the moral calculus. Lower wages cause an incremental decline in one’s well-being. No doubt. But for the unemployed, the decline is categorical, sometimes catastrophic — a loss not just of income but of independence and dignity.