(CNN) – Mitt Romney on Monday became the latest GOP presidential candidate to blast the Obama administration for new rules that would force all hospitals –including those run by the Catholic church– to provide workers health insurance that covers contraception, including sterilization.
A page on Romney's website asks supporters to sign a petition protesting "the Obama administration's attacks on religious liberty," saying the new rules amounted to an assault on personal rights.
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"The Obama administration is at it again," Romney's website said. "They are now using Obamacare to impose a secular vision on Americans who believe that they should not have their religious freedom taken away."
The new policy from the U.S. Department of Health and Human Services stirred an outcry this week, as it requires all employers' health insurance – including religious institutions – to cover contraceptives such as the birth control pill and the so-called Plan B pill, as well as more permanent contraceptive procedures like sterilization.
While churches are exempt, hospitals and schools with religious affiliations must comply. The new policy goes into effect August 1, but religious groups will have a year-long extension to enforce the rule.
Catholic teaching opposes abortion and the use of contraceptives, though a 2011 study by the Guttmacher Institute showed 98% of sexually active Catholic women had used contraception.
President Barack Obama's reelection campaign pushed back on the criticism from Romney, pointing to Romney's refusal when governor of Massachusetts to exempt Catholic hospitals from providing emergency contraception to rape victims.
"Mitt Romney continues to show that he will do or say anything to get elected," Obama campaign spokeswoman Lis Smith said. "He is even attacking the President for providing women with the same access to contraception and preventive health care services that he did as Governor of Massachusetts. And now, in an effort to pander to the most conservative parts of the Republican base, he has embraced the extreme personhood amendment, which would ban many forms of birth control, including birth control pills. This sends a clear message to women across America: Mitt Romney can't be trusted and his hypocrisy knows no bounds."
Romney's campaign pointed to the candidate's original veto of the bill which required hospitals to provide rape victims with emergency contraception. His veto was ultimately overridden by the state legislature.
"The governor's position on this law was that it never should have gone into effect in the first place, which is why he vetoed it," Romney spokesman Andrea Saul said.
Two Catholic presidential candidates, former Pennsylvania Sen. Rick Santorum and former House Speaker Newt Gingrich, have spoken out against the new rules.
Speaking on NBC's "Meet the Press," Gingrich said the new rules amounted to a "war on the Catholic Church."
Gingrich continued, "Every time you turn around, secular government is closing in on and shrinking the right of religious liberty in America, and I think there are millions of people who are very disturbed by that."
Santorum, speaking in Minnesota Monday, said the rules were a direct violation of American Catholic First Amendment rights.
"It is not just an assault on the First Amendment freedom of conscience, but the First Amendment freedom of speech," Santorum said. "This is the danger when government controls things. They can control how you exercise those rights and they can control your access to information about those rights."
– CNN’s Ashley Killough contributed to this report.