Abraham & Roetzel
Now named the Abraham Group, the lobbying firm's website "is one of the leading international strategic consulting groups focused on the energy & natural resources sector and related industries. The firm is headed by former US Secretary of Energy & US Senator Spencer Abraham; and Joseph McMonigle, former Chief of Staff at the US Department of Energy and Vice Chairman of the International Energy Agency." Its clients include foreign companies, and expenses have been as high as $560,000 in 2014.