Google said it is negotiating with the US government about what details it is able to reveal regarding data requests made by government agencies.
The company said the "sticking point" is whether it can only publish a combined figure for all requests, Reuters reported.
Google said that would be "a step back for users" because it already breaks out criminal requests and National Security Letters, another type of intelligence inquiry.
More top news
TOWIE star Mark Wright has tied the knot with Coronation Street actress Michelle Keegan at a lavish ceremony in Bury St Edmunds.
West Ham United have confirmed Sam Allardyce will not continue as their manager next season.
A goalless draw at home to Manchester United condemned Hull to the Championship next season.