I don't think America will ever use polymer bank notes because the patent to produce them is owned by Note Printing Australia which is the manufacturing branch of the Reserve Bank of Australia.
If America wanted polymer bank notes they would either have to have them printed in Australia, or develop new technology that doesn't infringe the Australian patent, or else pay the Reserve Bank for the right to print the notes in America.
The Canadian $100 note is printed in Australia along with every other polymer bank note used by several different countries.
If America wanted polymer bank notes they would either have to have them printed in Australia, or develop new technology that doesn't infringe the Australian patent, or else pay the Reserve Bank for the right to print the notes in America.
The Canadian $100 note is printed in Australia along with every other polymer bank note used by several different countries.