Grandma genie - you seem to have the opposite of my own experience. Over 40% of bad bots are from the US here in the UK - 5120 out of 12643 (40.4%) for this month at time of writing and that's not including Amazon, which is now banned in the IIS firewall but last month accounted for 500 hits on its own.
Last month websense accounted for 2123 hits. So far this month there have been 1217 so even worse than Amazon. :(