Stop lying!
This is the same effective lie you keep repeating. Continuing to repeat it does not make it in the truth.
The age of consent in Britain IS IRRELEVANT, even of the crime takes place there, when the trial JURISDICTION is an another country. The moment you take a US child across a US statel border for sex, US Federal Law applies - 18 years old becomes the age of content (even if that age is lower in either or both of the two states).
US Federal law is exactly the same with international borders. Take a 17 year old from a US state with a 16 year old age of consent, to Japan (where the age of consent is 13), and that is an offence under US Federal law because the Federal age of consent is 18. Period!
US Federal trials are under US Federal jurisdiction, and in the US jurisdiction, Giuffre was a minor child. There is no legal end-run around this.