Well, Ex-Tex, it's also worth noting Amerada Hess was and may still be the primary "cash cow" for the Democratic Party's Central NJ Wilentz "machine". ( One of the Wilentz crew married Leon Hess' daughter MANY years ago to cement the alliance.)
This "machine" also has had ties to a certain fraternal organization that has become notable over the years for its " downsizing methods ".
To add to that, it should be noted that for all the attempt to tie the Bush family to the Bank of Credit and Commerce International, it was in fact the Democrat's bank. It's ties in the US were cemented by Clark Clifford, the Dem's trusted wise-guy, got its toe-hold through Bert Lance, Jimmah Carter's buddy, and included on its board of directors Clifford's other fellow-travellers.
I'm not sure if the old Brown and Root gang is still around but they funded many a Dem campaign in Texas.