Microbead-Free Waters Act of 2015 finally came into force last month. As of July 1, 2017 it is now unlawful to manufacture rinse-off cosmetic products with plastic microbeads in the US. Beginning July 1, 2018 it will be unlawful to sell such products in the US.
Do note that there is a 1-year delay in each case for over-the-counter drugs.
The full bill is at https://www.congress.gov/bill/