A pro-Ted Cruz robo-telephone call is blasting Donald Trump for butting his nose into support of the Confederate flag coming down. The recorded message, coming late in the campaign, also takes a jab at Gov. Nikki Haley. “Put it in a museum, let it go,†the recording says, quoting Trump and his view on removing the flag. An announcer then picks up by saying “That’s Donald Trump supporting Nikki Haley removing the battle flag from the Confederate memorial in Columbia.†It adds “people like Donald Trump are always butting their noses into other people’s business,†and that “Trump talks about...