The very people who could add to the value of work being done have made economic choices to not work. This is the marriage penalty. This subject is often approached as a couple decision. The tax code doesn't necessarily effect the couple, except in the consideration of additional income. On Capital Hill, the Democrats don't speak about the side effect of over-taxing the rich because the byproduct of that thinking trickles down to the working married woman.
Republicans keep the matter hushed for the exact opposite reason.
Tax cuts will allow more women to get jobs flying in the face of social conservatism. The Tax Reform Act of 1986 had the effect of flattening federal rates which worked wonders for those women in the highest of brackets. But since then, those rates of taxation have climbed as Washington sought after greater revenues at the risk of losing the supply siders. And in another stroke of idiocy, the 1993 Earned Income Tax Credit was passed as the subsidy program help the working poor, through the tax system. This was well intended designed to ease the fact the the first dollar earned went to Social Security.