WASHINGTON, June 15 : The chair of the Senate Commerce Committee on Monday questioned a plan from private investment firm Grain Management to acquire key wireless spectrum from T-Mobile but potentially delay its use for years.Last year, T-Mobile agreed to sell its portfolio of 800 MHz licenses to private inve

WASHINGTON, June 15 : The chair of the Senate Commerce Committee on Monday questioned a plan from private investment firm Grain Management to acquire key wireless spectrum from…

WASHINGTON, June 15 : The chair of the Senate Commerce Committee on Monday questioned a plan from private investment firm Grain Management to acquire key wireless spectrum from…