Despite the many unsold 1926-S half dollars still in the government's hands, the Association sought the issuance of 1927-dated half dollars; this was refused by the Treasury Department (of which the Bureau of the Mint was a part) due to the backlog.
The Association wanted to see 1927-dated half dollars minted, but the Treasury Department, which included the Bureau of the Mint, refused because they were dealing with an existing backlog of coins.