President Barack Obama wears his decision to rescue General Motors and Chrysler three years ago as a badge of honor, a move to save jobs in an industry that helped create the backbone of the middle class more than a half-century ago.

For Obama, the auto bailout is a case study for his efforts to revive the economy and a potential point of contrast with Republican Mitt Romney, who opposed Obama’s decision to pour billions of dollars into the auto companies. If Romney wins the GOP nomination, expect to hear a lot about the car industry.

“The American auto industry was on the verge of collapse. And some politicians were willing to let it just die. We said no,” Obama told college students last week in Ann Arbor, Mich. “We believe in the workers of this state.”

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