“Women earn less than men across our economy — and women of color often lose out the most,” Hillary Clinton says on her campaign website.

She promises to fight for pay transparency and pass the Paycheck Fairness Act, which would give the federal government more power to intrude into firms’ decisions on pay.

But there’s no mystery about the male-female wage gap. College majors that require high math SATs, such as physics, math and engineering, lead to higher earnings than majors that need less math, such as communications and English literature. Women choose to major in subjects that require less math or lower math SAT scores. That’s one reason they earn less.

Read the full article at Economics 21: Hillary Clinton Is Wrong on the "War Against Women"