Cruz presses Trump on support for Planned Parenthood
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Deriding the outspoken New York businessman as "very, very liberal" for the majority of his life, Cruz lambasted Trump for previously describing himself as "very pro-choice" and in favor of partial-birth abortion.
"Right now, today as a candidate, he supports federal taxpayer funding for Planned Parenthood," the Texas senator said in an attack more than midway through the two-hour debate in South Carolina. 
"I disagree with him on that. That's a matter of principle," Cruz told those gathered in the Palmetto State, where the White House hopefuls are battling for conservative support ahead of the Feb. 20 GOP primary there.
"You are the single biggest liar," Trump retorted. "This guy will say anything."
After a lengthy rebuke of Cruz by Trump, the Texan responded, "Donald didn't disagree with the substance, that he supports taxpayer funding for Planned Parenthood."
"Where did I support it?" Trump inquired. 
Cruz mentioned video of Trump's previous remarks, saying the billionaire mentioned that Planned Parenthood does good work.
"It does do wonderful things, but not as it relates to abortion," Trump said. "There are wonderful things having to do with women's health."
Trump was one of very few Republicans to express support for the organization last year amid fierce debate on Capitol Hill to defund the healthcare provider in the wake of a series of videos about its fetal tissue program.
Trump said during a interview with Fox News in August that Planned Parenthood does do "good things," seeking to distinguish the group "as an abortion clinic" from its work to "service women."