So it doesn't say anything about having been sent to the USA? Try tracking it on the USPS website with the same tracking number. Once it is in the hands of the foreign postal service they may stop updating, so if it just says it was sent to the USA but then nothing, that may be it.
On the UK site it states:
"Your item has been passed to the overseas postal service for delivery in UNITED STATES OF AMERICA"
On the USA site it states:
"Status: Origin Post is Preparing Shipment. We have received notice that the originating post is preparing to dispatch this mail piece."
It looks like it is still in the UK. This status has not changed since day 2 of posting.
It's pretty frustrating especially since the process for getting police certificates takes so long in itself...without having extra delays such as this.
