The authorities in every state agree that minors cannot legally consent to sexual activity, and therefore any sexual activity between an adult and a minor is statutory rape. Beyond that baseline however, the states vary widely in how their laws deal with the issues involved, and sometimes these laws change over time.
Plea negotiations are an expected part of most criminal prosecutions. However, the state Supreme Court is reviewing an appeal of a plea deal in a statutory rape case where wrong information was provided to the defendant. This case may be important not only for a sexual assault of a minor criminal defense attorney but for most defendants.