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Republican presidential candidates (L-R) Sen. Ted Cruz (R-TX) and Donald Trump participate in a CBS News GOP Debate February 13, 2016 at the Peace Center in Greenville, South Carolina.
Republican presidential candidates (L-R) Sen. Ted Cruz (R-TX) and Donald Trump participate in a CBS News GOP Debate February 13, 2016 at the Peace Center in Greenville, South Carolina.

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    Donald Trump: Cruz is the 'biggest liar'

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Donald Trump: Cruz is the 'biggest liar'

Speaking at the CBS News GOP debate, presidential candidates Ted Cruz and Donald Trump trade insults and repeatedly interrupt one another as the debate gets tense.

Donald Trump: Cruz is the 'biggest liar'

Speaking at the CBS News GOP debate, presidential candidates Ted Cruz and Donald Trump trade insults and repeatedly interrupt one another as the debate gets tense.