The new international letter rate eliminated the lower postage rate that
exists for decades for letters mailed to Canada and Mexico and represents a
new increase of the postal rates in the US.
Yep ... ANYTHING to drive away the individual user.

They've got it ow so that nearly anything -=domestic=- other than a
simple sheet and a check in a lightweight envelope draws a
'surcharge'!

Never saw a 'business' so eager to drive away its 'small' customers.