Couple more articles on US estate tax

http://www.bdo.ca/library/publications/tax/taxbulletins/092005.cfm
http://www.montrealgazette.com/business/Estate+rises+from+dead/4043635/story.html

http://www.montrealgazette.com/business/fp/money/When+snowbirds+come+home/4019649/story.html

http://www.financialpost.com/personal-finance/Wrap+real+estate+Just+ripped/4022195/story.html

http://www.boston.com/realestate/news/articles/2010/12/17/canadians_loonie_for_arizona_real_estate/?page=2