Silva v. Gonzales, 455 F.3d 26 (1st Cir. Jul. 14, 2006) (Massachusetts conviction of statutory rape of 14-year-old girl, under Mass. Gen. Laws ch. 265, 23 ["unlawfully has sexual intercourse or unnatural sexual intercourse, and abuses a child under sixteen years of age"], was held in immigration court to be a "rape" aggravated felony for immigration purposes; since respondent did not challenge this conclusion, he waived any objection to removal on this basis).