5 Moments That Mattered in the Republican Debate

Seven Republican presidential candidates faced off Thursday night.

1. Trump and Cruz Dive Into 'Natural Born Citizen' Argument

In recent weeks Donald Trump has brought up the “natural born citizen” argument about Ted Cruz, questioning whether he is constitutionally able to run for president since he was born in Canada to an American mother. This evening, the moderators asked about the issue and Cruz said it wasn’t an issue for Trump in September.

“Back in September, my friend Donald said he had his lawyers look at this from every which way and there was no issue there,” Cruz said, noting Trump “is dismayed that his poll numbers are falling in Iowa.”

2. Cruz Confronts Goldman Sachs Loan

When moderators asked Ted Cruz about a recent New York Times piece on Cruz not disclosing a loan on a federal form, Cruz hit back.

3. Cruz Throws Trump’s "New York Values" Back At Him

When asked about his hit earlier this week on Trump's "New York values," Cruz clarified that they are “socially liberal or pro-abortion or pro-gay marriage."

He then turned around a Trump attack on him, saying, "Not a lot of conservatives come out of Manhattan,” an apparent reference to Trump telling crowds that "not too many evangelicals come out of Cuba.”

Trump turned serious in his response, though, citing New York’s response to the 9/11 attacks and telling his rival: “That was a very insulting statement that Ted made.”

4. Rubio Throws Kitchen Sink at Cruz

Rubio jabbed: “That is not consistent conservatism. That is political calculation.”

Cruz hit back saying the allegations are "absolutely false" adding he appreciates "your dumping your research folder on the debate stage."

5. Rubio Spars With Christie Over Record

But sparks flew as Christie hit back. “I like Marco too. And, two years ago he called me a conservative reformer that New Jersey needed,” Christie said. “That was before he was running against me. Now that he is he’s changed his tune.”