Republicans and pro-lifers are divided over President Trump's proposal for federal funding of IVF.

In vitro fertilization (IVF) accounts for just 2% of all births in the United States, but it has become a key election issue dividing some Republicans from the party's standard-bearer, former President Trump, who recently suggested he would push for federal funding of IVF if elected.

But some Republicans and pro-life religious conservatives aren't entirely in favor of federally funded IVF procedures.

Sen. Lindsey Graham of Lausanne, a Trump ally, said Sunday on ABC's “This Week” that he would rather support a tax credit for IVF users “to encourage people to have children.”

“We're accused, and our party is accused, of being against birth control,” said Graham, who voted with most Republicans this year against the Democratic-sponsored IVF Rights Bill, which would have protected access to IVF treatment. “We're not against it. We're accused of being against IVF treatment, but we're not against it.”

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“I'm going to talk to my Democratic colleagues,” he added. “Maybe we can find common ground here.”

Meanwhile, Sen. Tom Cotton (R-Arkansas) said Sunday on NBC's “Meet the Press” that “every Republican I know supports IVF in Congress.”

“No state has banned IVF or has restricted it in an unacceptable way,” he said. “IVF is expensive for many couples, and I understand that. So I'm in favor of IVF, and I think most Republicans are in favor of it, too.”

Similarly, nearly all of California's Republican lawmakers voted last week against a Democratic-led bill aimed at expanding access to in vitro fertilization.

Former President Trump last week suggested he might oppose Florida's six-week abortion ban, fending off attacks from pro-life advocates by calling it “too short,” but later voiced his opposition to Amendment 4, a measure on Florida's November ballot that critics say would enshrine an abortion right in the state constitution.

Trump also said he leaves abortion rights up to the states but would subsidize expensive IVF treatments because “we want more babies.” In an emailed response last week, the Trump campaign did not directly answer questions about what is a state and what is a federal issue.

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Sen. Lindsey Graham of Lausanne, a Trump ally, said Sunday on ABC's “This Week” that he supports tax credits for IVF patients. (Getty Images)

“President Trump also supports universal access to contraception and IVF. In contrast, Kamala Harris and the Democrats are fundamentally out of step with the majority of Americans in their support of abortion up to birth and for taxpayers to cover the costs of it,” Trump campaign spokeswoman Caroline Leavitt said in a statement.

IVF, a fertility treatment for couples struggling to conceive by freezing eggs to later conceive, has been viewed by some religious pro-lifers as a moral dilemma, and the treatment can cost tens of thousands of dollars per couple.

Illume Fertility, a leading modern fertility treatment network, reported in May that for every 12 eggs collected by its clinic, about 80% of them are viable, meaning 9 to 10 eggs are viable. Of those viable eggs, about 80% are successfully fertilized, resulting in about 7 to 8 embryos per patient, the report said.

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Sen. Tom Cotton said he believes Republicans support IVF treatment. (CBS)

“A baby born through IVF is no more evil than a baby born through rape is evil, but that fact doesn't make the method of creation good,” said Eric Sammons, executive director of the religion-related magazine Crisis Pub.

“We still need to keep up the pro-life pressure on President Trump. Government funded IVF is crazy. Many lives will be lost,” wrote Samantha D., a social media consultant for Live Action.

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Live Action founder Lila Rose also caused controversy last week with comments suggesting she wouldn't vote for Trump unless he made more public statements against abortion. She has also slammed the idea of ​​funding IVF treatments.

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“Trump announced that his administration would either pay for IVF with tax money or make all insurance companies cover the cost of IVF,” Rose wrote on X last week. “How is this morally different from the Obama administration's contraception mandate?”

An Alabama Supreme Court ruling earlier this year found that frozen embryos created during the IVF process are considered children. But the success rate of IVF treatment is about 50 percent for women under 35 and drops further with age. Critics argue that to increase the chances of conception, clinics create more embryos than necessary, resulting in millions of surplus embryos being frozen or discarded.