Ben Carson, left, and Ted Cruz, right, look on as Donald Trump speaks during the CNN Republican presidential debate at the Venetian Hotel & Casino on Tuesday, Dec. 15, 2015, in Las Vegas.
Ben Carson, left, and Ted Cruz, right, look on as Donald Trump speaks during the CNN Republican presidential debate at the Venetian Hotel & Casino on Tuesday, Dec. 15, 2015, in Las Vegas. John Locher AP
Ben Carson, left, and Ted Cruz, right, look on as Donald Trump speaks during the CNN Republican presidential debate at the Venetian Hotel & Casino on Tuesday, Dec. 15, 2015, in Las Vegas. John Locher AP

Another GOP presidential debate, another battle with facts

December 15, 2015 10:45 PM