U.S. Republican presidential Rick Santorum on Sunday condemned what he called President Barack Obama's world view that "elevates the Earth above man" and requires insurers to pay for prenatal tests that will encourage more abortions.

Republican presidential candidate Rick Santorum insists Barack Obama's world view is 'different than how most people do in America,' but denies questioning the president's Christian faith. (Chris Carlson/Associated Press)

A day after telling an Ohio audience that Obama's agenda is based on "some phoney theology, not a theology based on the Bible," Santorum said he wasn't criticizing the president's Christianity.

"I've repeatedly said I don't question the president's faith. I've repeatedly said that I believe the president's Christian," Santorum said in a broadcast interview.

"I am talking about his world view, and the way he approaches problems in this country. I think they're different than how most people do in America."

The former Pennsylvania senator said Obama's environmental policies promote ideas of "radical environmentalists," who, Santorum argues, oppose greater use of the country's natural resources because they believe "man is here to serve the Earth."

He said that was the reference he was making Saturday in his Ohio campaign appearance when he denounced a "phoney theology."

"I think that is a phoney ideal. I don't believe that is what we're here to do," Santorum said. "We're not here to serve the Earth. The Earth is not the objective. Man is the objective."

Obama's campaign said Santorum's remarks were another attack on the president's faith by Republican rivals in a nominating contest that has grown increasingly bitter and negative.

"It's just time to get rid of this mindset in our politics that, if we disagree, we have to question character and faith," said Robert Gibbs, Obama's former press secretary.

"Those days have long passed in our politics. Our problems and our challenges are far too great."

Prenatal screening opposition

Santorum said his claim that Obama's health care overhaul encourages abortions stems from the fact that insurance companies are required to pay for prenatal testing, which he said will result in more pregnant women having more procedures. He specified amniocentesis, a procedure that can identify physical problems in the unborn.

"The bottom line is a lot of prenatal tests are done to identify deformities in utero and the customary procedure is to encourage abortion," he said.

A doctor recommended abortion when a sonogram discovered health problems for Santorum's youngest daughter, who was born three years ago with a genetic condition known as Trisomy 18, which typically proves fatal. She has lived longer than most children born with the condition.

"This is typical," Santorum said. "This is what goes on in medical rooms around the country."

He said he's critical of the mandate in Obama's health-care plan that insurers must pay for the tests, not of prenatal testing in general.

"There are all sorts of prenatal testing which should be provided free. I have no problem with that if the insurance companies want to. I'm not for any of these things to be forced," Santorum said.

Santorum spoke on CBS's Face the Nation, while Gibbs was on ABC's This Week.