I live in the next over from where they print the paper used on $1 bills. $1 bills are by far the most common demonination and it's loss would be economic disaster for the region. There is just no way to absorb all the workers who'd lose their jobs if Crane (who makes the paper) loses that amount of business from the government. On the top of that no Senator from Massachusetts would ever support it and a majority of the our Representatives wouldn't either.
I agree with the idea of dropping the dollar bill but it it would be a politcal and economic disaster for Massachusetts, thus won't happen for a long time, if ever.