You can copy a snapshot from US East to another region. You can also remove snapshots from regions.
To copy a snapshot to a region:
Go to the Snapshot Regions page.
This page displays snapshots and shows which region each snapshot is on.
Select the snapshot you want to copy, by selecting its checkbox.
Click Copy to Region.
Under Copy to this region, select one region that you want to copy the snapshot to.
The copy operation begins. A row for the new, copied, snapshot is added to the Snapshot Regions grid. The copy takes some time and the status is displayed in the Status column. Initially, while the status is still Pending.
For a short time until the copy starts, the status is displayed as Pending and you can cancel the copy by clicking the Cancel link right next to the Pending status.