The D.C. Circuit denied downwind states' petition challenging EPA's refusal to expand the Northeast Ozone Transport Region, which consists of states required by the Agency to enact tight restrictions on pollutants that contribute to ozone that drifts across state lines. The downwind states argued th...

A district court granted FWS' motion to dismiss a challenge brought by an environmental group concerning conservation of the lesser prairie chicken. The group argued that FWS unreasonably delayed submitting to Congress a 2003 policy concerning conservation efforts when making listing decisions under...

A district court dismissed a lawsuit brought by conservation groups challenging FWS' 2017 enhancement finding that overturned a previous ban on the importation of elephant trophies from Zimbabwe. Conservation groups challenged the finding, which concluded that hunting elephants in Zimbabwe enhanced ...

The D.C. Circuit granted hydrofluorocarbon (HFC) manufacturers' petitions to review a 2016 EPA rule that rendered certain HFCs unacceptable for various uses in aerosols, motor vehicle air conditioners, commercial refrigerators, and foams. The court found that it was bound by a previous ruling that s...