O’HARA, Pa. – Tagg Romney, the eldest son of presidential candidate Mitt Romney, announced via Twitter that he and his wife Jen have new twin boys, delivered by a surrogate today. “Happy 2 announce birth of twin boys David Mitt and William Ryder. Big thanks to our surrogate. Life is a miracle,” Tagg tweeting, linking to a photo of himself and one of his new sons. This the second time that Tagg, 42, and his wife, Jen,39, have used a surrogate. The same surrogate was used for the twins carried their youngest son Jonathan, who was born in August of...