https://www.reuters.com/article/us-sprint-corp-m-a-t-mobile/t-mobile-sprint-merger-wins-approval-from-u-s-judge-idUSKBN2042MG >A federal judge on Tuesday approved a merger between No.3 and No.4 wireless carriers T-Mobile US Inc and Sprint Corp, rejecting a claim by a group of states that said the deal would violate antitrust laws and raise prices.