Republican White House hopeful Mitt Romney on Monday joined a battle over a part of President Barack Obama’s healthcare law that has outraged Catholic bishops.

Under new provisions outlined by Obama’s administration, Catholic hospitals, schools and charities will be required to provide health insurance for their employees covering contraception even if though it violates the church’s teachings.

Catholic bishops’ complaints about the law have filtered onto the Republican campaign trail to find a challenger to Obama in the presidential election next Nov. 6.

Newt Gingrich has declared the policy a war on America’s religious freedom and Rick Santorum has spoken out against it as well.

Romney told a large crowd in Centennial, Colorado:

“Think what that does to people who are in faiths that do no share those views. This is a violation of conscience. We must have a president who is willing to protect America’s first right, our right to worship God.”