Given these complexities, we can say that different US states grant people the legal authority to agree to various sexual activities at ages ranging from about 14 to 18.
If a person lives in a state where the age of sexual consent is, for example, 16 and is dating a 16- or 17-year-old in another state where the age of consent is also 16, that would violate this federal law, even though any particular activity the two people may engage in would be legal in both their states.
This law also makes it illegal for a foreign married couple in which one or both spouses is under 18 to honeymoon in the United States!
The types of sexual actions that the couple engaged in is another factor that is taken into account in court.
Sexual intercourse is considered to always be statutory rape, but other sexual acts vary from state to state.
It is seldom true to say simply that a certain jurisdiction has an age of consent of x.