shifts the blame a tad  -> but no biggy
but doesn't lessen their  responsibility
from the 
pollution impact of the crude oil
 and dispersant chemicals used
because basically unless they can translocate
fresh marshland or build it /clean it artificially somehow
the eco system of the marsh that feeds the whole
gulf has been destroyed basically and it has to have some
mechanical system of cleaning it...  thus far 
it doesn't exist
unless you covered it with hay and planted a mega crop of
oyster mushrooms that converts the petroleum into fertilizer.
