The complete text
"The $5 note redesign is part of an ongoing U.S. effort to stay ahead of increasingly sophisticated counterfeiters...
in a ?variation of an older threat,? counterfeiters are bleaching the ink off of $5 notes and reprinting the paper with markings that counterfeit $100 notes...
The $1 note will not be redesigned..."
Coudn't counterfeiters reduce their overhead by bleaching $1 bills rather than $5?
Doesn't it make sense to redo the $1 bill, too?