Mexico's telecom regulator IFT has already fined Telmex and Dish for failing to officially announce a commercial agreement they struck, but the tie-up might now need reexamining under new telecom laws. The Telmex-Dish deal was reached in 2008. The investigation into the validity of the agreement was launched by the now-defunct antitrust commission Cofeco, and inherited by IFT in October 2013.

Constitutional reforms to the telecom sector approved in 2013, however, reshaped competition laws, potentially making the Telmex-Dish tie-up illegal under the new rules. Telmex was declared a preponderant player in the telecom market, and was subject to several limitations including preventing Telmex from offering pay TV services. IFT could conclude, then, that Telmex's business deal with Dish could go against this law.

The Telmex-Dish deal had already been put into question in July, but Dish shrugged them off by assuring that its business with Telmex was limited to printing a bill for shared services. Telmex has more than the reform against its quest to offer pay TV services, something it has been actively pursuing for years. The company is prevented from entering the pay TV market because of a clause in its concession contract despite IFT saying that it might be allowed to enter the market as early as 2015.

Both Telmex and Dish have disputed the IFT-imposed fines, with Telmex saying it would fight it using 'all available legal avenues'. IFT imposed a MXN 43 million (USD 2.93 million) fine on Dish and a MXN 14.3 million fine on Telmex.