Hi Robert -
No, Tableau can't parse / shred an XML file on it's own. You'll need to use a different tool to transform the XML file into something Tableau can read.
If you have Microsoft Access or Excel, I'd try to use one or the other to import the XML, then save as in *.mdb (Access) or *.xlsw (Excel) format...Tableau can easily consume these.
Will give it a go in Excel.