联邦罪：18岁以下的色情照片和视频

The Protect Act § 503 of 1992 (codified at 18 U.S.C. § 2251 to 18 U.S.C. § 2260) makes it a federal crime to possess or create sexually explicit images of any person under 18 years of age regardless of consent.[119] The non-commercial possession of an explicit picture or video clip of the person under the age of eighteen (such as a cell phone photograph of a naked sexual partner who is under the age of eighteen, or a picture of the photographer if they are under 18) may still constitute a serious federal child pornography felony.[120] 
这就是为什么很多A片，对于teen的需要片首确认年龄。
记得N年前，宾州一个老人被告拥有未成年色情照片还是视频吗？据说是被栽赃(女儿嫁给意大利裔的丈夫）
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除此之外，各个州有自己的规定。age of consent指的是达到那个年龄（16/17/18)后，有能力同意是否可以做爱。但是，如果是学校员工，则有另外规定，通常18/19岁