The Washignton Post's Garance Franke-Ruta wrote

As the Republican Party's vice presidential candidate last year, Palin said little about her son's condition or the circumstances surrounding his birth. Her reticence prompted wild, Internet-fueled allegations about Trig's parentage, rumors that still stung the governor two months after the election, when she called the media's reporting on her family "very scary." She also refused to disclose her health records, breaking an unwritten rule of presidential politics. The night before voters headed to the polls, Palin's campaign released a letter from her family physician that provided the most information to date about Trig's diagnosis. Cathy Baldwin-Johnson wrote that Palin learned in the second trimester that he had Down syndrome.

Second,