From Real Clear Politics:
Ted Cruz responds to a cease and desist letter from Donald Trump's lawyer threatening to sue him for defamation and damages over an ad running in South Carolina. Trump claims the ad constituted defamation, but Cruz says "bring it on."
"I have to say to Mr. Trump you have been threatening frivolous lawsuits for your entire adult life," Cruz said at a press conference in South Carolina. "If you want to file a lawsuit challenging this ad claiming it is defamation... file the lawsuit."