The current USPS driver only works on domestic shipments.

docs/changelog/7.x.x.txt

@@ -4,6 +4,7 @@
  - fixed #11202: USPS driver does not log authentication errors
  - fixed #10985: Survey: can't add multiple choice answer
  - fixed #11197: Survey Edit Console is not i18n'ed
+ - fixed USPS driver only works on domestic addresses.
 
 7.8.3
  - Rewrote Spectre's workflow queues to prevent it from "forgetting" about some workflows.

lib/WebGUI/Shop/ShipDriver/USPS.pm

@@ -14,7 +14,7 @@ Package WebGUI::Shop::ShipDriver::USPS
 
 =head1 DESCRIPTION
 
-Shipping driver for the United States Postal Service.
+Shipping driver for the United States Postal Service, domestic shipping services.
 
 =head1 SYNOPSIS
 
@@ -127,6 +127,9 @@ sub calculate {
     if (! $self->get('userId')) {
         WebGUI::Error::InvalidParam->throw(error => q{Driver configured without a USPS userId.});
     }
+    if ($cart->getShippingAddress->get('country') ne 'United States') {
+        WebGUI::Error::InvalidParam->throw(error => q{Driver only handles domestic shipping});
+    }
     my $cost = 0;
     ##Sort the items into shippable bundles.
     my @shippableUnits = $self->_getShippableUnits($cart);
@@ -428,6 +431,9 @@ sub _getShippableUnits {
         }
         else {
             my $zip = $item->getShippingAddress->get('code');
+            if ($item->getShippingAddress->get('country') ne 'United States') {
+                WebGUI::Error::InvalidParam->throw(error => q{Driver only handles domestic shipping});
+            }
             push @{ $looseUnits{$zip} }, $item;
         }
     }

t/Shop/ShipDriver/USPS.t

@@ -23,10 +23,9 @@ use Data::Dumper;
 
 use WebGUI::Test; # Must use this before any other WebGUI modules
 use WebGUI::Session;
+use WebGUI::Shop::ShipDriver::USPS;
 
 plan tests => 65;
-use_ok('WebGUI::Shop::ShipDriver::USPS')
-    or die 'Unable to load module WebGUI::Shop::ShipDriver::USPS';
 
 #----------------------------------------------------------------------------
 # Init
@@ -224,14 +223,14 @@ my $workAddress = $addressBook->addAddress({
     organization => 'Plain Black Corporation',
     address1 => '1360 Regent St. #145',
     city => 'Madison', state => 'WI', code => '53715',
-    country => 'USA',
+    country => 'United States',
 });
 my $wucAddress = $addressBook->addAddress({
     label => 'wuc',
     organization => 'Madison Concourse Hotel',
     address1 => '1 W Dayton St',
     city => 'Madison', state => 'WI', code => '53703',
-    country => 'USA',
+    country => 'United States',
 });
 $cart->update({shippingAddressId => $workAddress->getId});
 
@@ -838,6 +837,19 @@ isa_ok($e, 'WebGUI::Error::Shop::RemoteShippingRate', 'calculate throws an excep
 $properties->{userId} = $userId;
 $driver->update($properties);
 
+my $dutchAddress = $addressBook->addAddress({
+    label => 'dutch',
+    address1 => 'Rotterdamseweg 183C',
+    city => 'Delft', code => '2629HD',
+    country => 'Netherlands',
+});
+
+$cart->update({shippingAddressId => $dutchAddress->getId});
+$cost = eval { $driver->calculate($cart); };
+$e = Exception::Class->caught();
+isa_ok($e, 'WebGUI::Error::InvalidParam', "calculate won't calculate for foreign countries");
+
+$cart->update({shippingAddressId => $workAddress->getId});
 #######################################################################
 #
 # _calculateInsurance edge case