Brian Williams lost his job as anchor of the NBC Nightly News for perpetuating one fiction, and for failing to perpetuate another. The first fiction you're probably familiar with. Last winter, Williams was caught for having repeated a tall tale about his experiences embedded with U.S. troops on a helicopter in the 2003 Iraq War.
If you are Rh-, then you are - - (one negative came from mom and one from dad). If both parents are Rh+ and have mixed genes (+ -), then it is possible that each of them will give the - gene to their child, making the child Rh- (- -). So, to answer your question. Two Rh+ parents can have an Rh- child.....
A potentially dangerous condition, called Rh Disease, can result when the mother is Rh negative and the baby is Rh positive. Similar to an autoimmune condition, Rh disease occurs when the Rh-negative mother's body detects Rh factor in the baby's blood and develops antibodies to protect itself.