AP - The Secret Service has closed its inquiry into an allegation that a 10-year-old New Jersey boy made a telephone threat to the Presidential Library of former President George W. Bush.<p><strong>Read more:</strong> <a class="rssreadon" rel="external" title="Secret Service closes inquiry into NJ boy's call   (AP)" href="http://us.rd.yahoo.com/dailynews/rss/education/*http%3A//news.yahoo.com/s/ap/20110305/ap_on_re_us/us_grade_schooler_bush_threat" target="_blank">http://us.rd.yahoo.com/dailynews/rss/education/*http%3A//news.yahoo.com/s/ap/20110305/ap_on_re_us/us_grade_schooler_bush_threat</a></p>