The two companies tout their deal as necessary for innovation and claim that it doesn't decrease competition in the field. Those arguments will be difficult to prove, says Eleanor Fox, an antitrust expert at NYU Law School. The third and fourth largest mobile networks in the U.S. announced a $26.5 billion merger Sunday that they claim will help develop a 5G network and create jobs. The deal still needs approval from regulators, who have expressed antitrust concerns in the past.

For full interview, click here.