261.5. (a) Unlawful sexual intercourse is an act of sexual
intercourse accomplished with a person who is not the spouse of the
perpetrator, if the person is a minor.
(b) Any person who engages in an act of unlawful sexual
intercourse with a minor who is not more than three years
older or three years younger than the perpetrator, is
guilty of a misdemeanor.
(c) Any person who engages in an act of unlawful sexual
intercourse with a minor who is more than three years younger than
the perpetrator is guilty of either a misdemeanor or a felony, and
shall be punished by imprisonment in a county jail not exceeding one
year, or by imprisonment in the state prison.
An adult who engages in an act of unlawful sexual intercourse
with a minor at least three years younger than the adult is liable
for a civil penalty not to exceed ten thousand dollars ($10,000).
首先,美国各州法律不同,年龄规定也不同。其次,就这里所讨论的加州来说,法定年龄是18岁,那么你举的例子20岁和17岁发生关系绝对违法。我附上了法律原文,省了你狡辩的时间。
261.5. (a) Unlawful sexual intercourse is an act of sexual
intercourse accomplished with a person who is not the spouse of the
perpetrator, if the person is a minor.
(b) Any person who engages in an act of unlawful sexual
intercourse with a minor who is not more than three years
older or three years younger than the perpetrator, is
guilty of a misdemeanor.
(c) Any person who engages in an act of unlawful sexual
intercourse with a minor who is more than three years younger than
the perpetrator is guilty of either a misdemeanor or a felony, and
shall be punished by imprisonment in a county jail not exceeding one
year, or by imprisonment in the state prison.
An adult who engages in an act of unlawful sexual intercourse
with a minor at least three years younger than the adult is liable
for a civil penalty not to exceed ten thousand dollars ($10,000).