[kach22i]

From the NYDailynews link Thom gave:

http://www.nydailynews.com/front/story/393375p-333478c.html

The Daily News has learned that lawmakers also want to know if a detailed 45-day probe should have been conducted instead of one that lasted no more than 25 days.

According to a 1993 congressional measure, the longer review is mandated when the company is owned by a foreign government and the purchase "could result in control of a person engaged in interstate commerce in the U.S. that could affect the national security of the U.S."