A little history....Margaret Sanger was the leader of the Birth Control Movement starting around 1916 which eventually spawned Planned Parenthood in 1952.....Margaret Sanger was the first President of Planned Parenthood...which not only provided contraception but got into eugenics and abortion as well.....she died one year after the Griswold v Connecticut case...
Some things Planned Parenthood does...
---pro abortion (provides about 300,000 abortions per year)
---pro birth control
---pro abortifacients (morning after pills)
---opposes parental/spousal consent
---opposes laws to notify parents of impending abortion
---opposes laws to require ultrasounds before an abortion
---opposes a waiting period before the abortion
---opposes bans on late-term abortions
---opposes refusal laws allowing pharmacist to refuse selling of drugs against his beliefs
---opposes abtinence-only education in public schools
and let's not forget the shocking video of PP employees being complicit in aiding what they thought was an underage prostitution ring (but was really actors posing as a pimp and prostitute)
So there are plenty of reasons why Santorum as well as other politicians have good reason for addressing these "public policy issues" regarding birth control....
...in fact a year ago the House voted to end all funding for Planned Parenthood and that of course started the recent war drums pounding on the whole birth control issue....not to mention providing propaganda fodder for the upcoming election....