Screenshot / ABC NewsSen. Ted Cruz (R-Texas) apologized to Ben Carson on stage at the ABC News Republican debate Saturday night for his campaign spreading misleading messages the night of the Iowa caucuses implying that Carson was going to leave the race. Carson declined to attack Cruz outright when the messages came up at the debate, but said that the campaign's tactics represented "Washington ethics." "Washington ethics basically says, 'If it's legal, you do what you need to do in order to win,'" Carson said.