Looks like the four major US cell phone providers have been caught with their proverbial hands in the consumers pocket. Recently, Sen. Herb Kohl, chair of the antitrust subcommittee, sent a letter to the four major US Carriers (AT&T, Verizon Wireless, Sprint, and T-Mobile) asking them to explain why text messaging rates have doubled over the past 3 years when the cost to send them has remained the same. Seems like the Senator also noticed that when one carrier raises costs, they all follow suit. Aren’t these carriers supposed to be competing against each other to lower rates and not working together to raise them? So far none of the carriers have not responded. Not surprising.