The DJIA has not "tanked" on the watch of Obama:There have been some downward corrections, some of them due to the announced policies of Obama.
The stock market "tanked" last year.In the one year period from 9 October, 07 to 9 October, 08 the market lost 5,500+ points. There was little that the Bush administration could have done last year tosave the DJIA from the crapper.
Since 1 December, 08 the market has lost about 1,100 points. If the Obama "stimulus"plan does not work look for the DOW to go as low as 5,000 but no lower.
For a history of theDow Jones Industrial Averagego to:
http://www.mdleasing.com/djia.htm