I am also ambivalent about increased government subsidization of birth control. As there is a statistical correlation between the rise in birth control and the rise in out of wedlock births, which have adverse social and economic costs. A technology shock if you will normalized out of wedlock birth and premarital sex.
This is according to the Brookings Institution. Certainly not a Conservative or Libertarian think tank.
An Analysis of Out-Of-Wedlock Births in the United States Brookings Institution
Really, at the end of the day, birth control is something that should be provided through the free market.
Free markets provide goods at the lowest cost and greatest quantity, and allow individuals to make their own decision regarding using the technology. And there is no evidence that government intervention through increased subsidy would reduce unwanted pregnancies or the out of wedlock birth rate, so it is spending more money we don't have towards something there isn't evidence for.