"The Obama administration's scrapping of a proposed new rule that would toughen ozone standards has put lawyers involved in litigation over the existing regulations on alert."

"Litigation before the U.S. Circuit Court of Appeals for the District of Columbia had been put on hold when President Obama took office in early 2009 and U.S. EPA considered whether to revise the rules first introduced the previous year, at the tail end of the George W. Bush administration.

The White House dismayed environmentalists last Friday when Obama announced that the administration wouldn't adopt the new regulations ."

Lawrence Hurley and Gabriel Nelson report for Greenwire September 7, 2011. [2]