Ahead of the Republican South Carolina primary on Saturday, candidates Ted Cruz and Donald Trump are feuding over a Cruz campaign TV ad that accuses Trump of having been pro-choice in the past. The ad, airing in South Carolina, features a clip from a 1999 Trump interview with NBC’s “Meet the Press.” In the interview, Trump says he is “pro-choice in every respect.” In response, the Trump campaign sent a cease-and-desist letter to the Cruz campaign. Trump has also threatened to sue Cruz for defamation if the campaign continues to air the ad. A recent Bloomberg poll shows Trump with a 19-point lead over Cruz in South Carolina.