LightSquared has invested billions of dollars in plans to develop a nationwide 4G network, but the FCC moved to block the network in February over concerns that it would interfere with critical GPS devices, including ones used by airplane pilots. The FCC has denied giving any special treatment to LightSquared.

{mosads}The spokesman also claimed that “[s]o far, of the first 1,174 pages reviewed, 1,171 pages are news clips that are publicly available.” Grassley and his staff have also said that previous sets of documents released by the commission contained nothing pertinent to Grassley’s concerns.

“Sen. Grassley has asked consistently, beginning with and since his initial request of April 27, 2011, for internal documents that would shed light into why the FCC appeared to give expedited initial approval to LightSquared’s wireless project,” the spokesman said, while denying allegations that Grassley had “moved the ball” on his demands from the agency.

“He simply wants access to FCC documents so he can determine whether the FCC is performing due diligence before approving major projects involving public resources and affecting consumers,” the spokesman said.