Retraction in science. In science, a retraction of a published scientific article indicates that the original article should not have been published and that its data and conclusions should not be used as part of the foundation for future research.
According to the database, Obama has issued 139 executive orders so far. In a comparable amount of time in their presidencies, President George W. Bush signed 160 executive orders, while President Bill Clinton signed 364. By the way, executive orders are numbered consecutively, so you can easily count how many each president signed.
While it is true that Obama has been using executive orders more liberally lately, he has not signed even close to 900 of them. You can check it out yourself at http://tinyurl.com/9skhqk, website of The American Presidency Project at the University of California, Santa Barbara, which tracks executive orders.