Thanks for pointing out the now standard Locale::Country. I've modified it to get the data from it.

package Locale::Country::TieHash;

use 5.002;
use strict;
use warnings;

use Tie::Hash;
use Carp;
use Locale::Country;

our $VERSION = '0.01';

our @ISA = qw(Tie::StdHash);


my    %CountryHash = ();



sub TIEHASH {
        my $class = shift;
        my $self = {};
        my @countries = all_country_codes();
        
        foreach my $country (@countries){
            $CountryHash{$country} = "\U$country ".code2country($count
+ry);
            $CountryHash{lc(code2country($country))} = "\U$country ".c
+ode2country($country);
        }
        
        $self->{DAT} = \%CountryHash;
        
        $self->{keys} = \@countries;
        $self->{key_index} = 0;
           return bless $self, $class;
   }

sub STORE {
    my ($self, $key, $value) = @_;
        croak __PACKAGE__,":Cannot set value for $key! READ-ONLY";
    } 
sub DELETE {
    my ($self, $key, $value) = @_;
        croak __PACKAGE__,":Cannot delete value for $key! READ-ONLY";
    } 

sub FETCH {
    my ($self, $key) = @_;
    $key=~/^(\w\w)\s/;
    my $ikey = lc($1 || $key);
    return $self->{DAT}{lc $ikey};
} 
sub EXISTS {
    my ($self, $key) = @_;
    $key=~/^(\w\w)\s/;
    my $ikey = lc($1 || $key);
    return exists $self->{DAT}{lc $ikey};
} 
sub DEFINED {
    my ($self, $key) = @_;
    $key=~/^(\w\w)\s/;
    my $ikey = lc($1 || $key);
    return defined $self->{DAT}{lc $ikey};
} 


sub FIRSTKEY {
    my $self = shift;
    $self->{key_index} = 0;
    return $self->{DAT}{ $self->{keys}->[$self->{key_index}++] };
}


sub NEXTKEY  {
    my $self = shift;
    return undef unless defined($self->{keys}[ $self->{key_index}]);
    return $self->{DAT}{$self->{keys}[ $self->{key_index}++] };
}

sub CLEAR {
       croak __PACKAGE__,":Cannot clear Country Hash! READ-ONLY";

}

1;
__END__
# Below is stub documentation for your module. You better edit it!

=head1 NAME

WWE::Country::ISO - Perl extension for Validating Country codes via ti
+ed-hash

=head1 SYNOPSIS

  use Locale::Country::TieHash;
  tie %Countries, 'Locale::Country::TieHash';

=head1 DESCRIPTION
use Locale::Country::TieHash;

tie %Countries, 'Locale::Country::TieHash' or die "Couldn't tie";
my $country = "United StAtes";
die "Invalid $country" unless exists($Countries{$country});
print     $Countries{'Us'},"\n";                    # Prints US United
+ States
print     $Countries{'Us UnitEd StateS'},"\n";    # Prints US United S
+tates
print     $Countries{'United States'},"\n";        # Prints US United 
+States
my        @states = keys %Countries;                # Returns ISO 3166
+ names sorted.

Let's you look up countries by ISO 3166 Alpha-2abbreviations, Country 
+name 
and ISO 3166 country name. (Case-insensitive)

Exists and defined work as you would expect.

Use at your own risk :)
=head2 EXPORT

None by default.



=head1 AUTHOR

Pumphret, Lee, E<lt>perl@leeland.net<gt>

=head1 COPYRIGHT

Copyright (C) 2002 Lee Pumphret  
All Rights Reserved.

This module is free software; you can redistribute it and/or modify it
+ 
under the same terms as Perl itself.

=head1 SEE ALSO
Locale::Country
L<perl>.

=cut
[download]

-Lee

"To be civilized is to deny one's nature."