Due to the devaluation of the dollar it would seem that the US would reactivate the higher denomination bills they dropped back in 1969. At least the $500 and $1000 bills. Back in '69 you could buy a good car for a few thousand dollars, today a good car costs ten or twenty thousand. $1 in 1969 would buy the same amount in 2009 as $5.85. Of course with plastic replacing paper maybe they see no need for it. And I guess the drug lords and money smugglers would love to see higher denominations.