Does the US still print silver certificates?

The last silver certificates were printed in the early 1960s, although they were dated 1957 B.

During the 19th century silver certificates were at some point printed in every denomination from $1 to $1000. Only $1, $5, and $10 bills were printed as silver certificates during the 20th century. When the price of silver was deregulated the government could no longer exchange silver certificates for a fixed amount of metal, so redemption was halted to prevent people from speculating on price fluctuations.

Because they were no longer "convertible", silver certificates became just like other bills in circulation. There was no longer any need for separate types of paper money so production was stopped. By 1969 all $1, $5, and $10 bills were issued as Federal Reserve Notes. Silver certificates remained in circulation but gradually disappeared as they wore out.