Former President Donald Trump has proposed a number of potential tax breaks to be enacted if voters give him a win in November. This week, he added a protectionist wrinkle to one of his proposals for his second term—which would be difficult to abide by, because of policies he enacted during his first term. As Reason reported earlier this month, Trump told the Detroit Economic Club that if elected in November, “we will make interest on car loans fully [tax] deductible.” “When we do all of this, you will witness nothing less than the launch of a new American industrial revolution,” he added. “By…