According to the results of this recent Gallup poll, if Americans could have only one child 40% would prefer that the child be a boy, compared to only 28% who would that it be a girl. This level of preference for boys over girls is, dishearteningly, the same level of preference Americans reported in 1941.
There’s been a lot of discussion about preference for male children is some Asian countries, and the potential gender imbalance that China’s “one child policy” could create as a result. There’s also been a predictable amount of scrambling around to explain the displayed preference for male children in Asian countries by some deep East-West divide, or some ingrained sexism in Chinese culture.
The results of polls like this one call those explanations into question. Differences between Asian and American culture aside, people just tend to prefer boys.