The XML is
<address> <line>123 any street</line> <city>SF</city> <state>CA</state> <country>US</country> </address>
<address> <line>456 other lane</line><line>flat 3</line> <city>London</city> <state></state> <country>GB</country> </address>
<address> <line>14 gordon st</line><line>#204</line> <city>Brighton</city> <state>MA</state> <country>US</country> </address>
<address> <line>37 foo lane</line> <city>Ixtapa</city> <state>MX</state> <country>MX</country> </address>
<address> <line>44 sheep st</line><line>#1</line> <city>Liverpool</city> <state></state> <country>GB</country> </address>
<address> <line>74 nice st</line><line>#1801</line> <city>Chicago</city> <state>IL</state> <country>US</country> </address>
The count for US nodes is 3