Google has called on the secretive Foreign Intelligence Surveillance Court Tuesday to relax its gag order on tech companies targeted in U.S. security investigations, The Guardian reports.

The legal filing cites the first amendment’s guarantee of free speech and follows on from a letter to attorney general Eric Holder asking for permission to disclose the number of requests Google receives under the foreign intelligence securities act (FISA).

Google already publishes a widely imitated “transparency report” that documents demands from the U.S. government and from other governments worldwide. […]