https://www.reuters.com/article/us-sprint-corp-m-a-t-mobile-us/t-mobile-sprint-ready-board-committees-to-decide-on-merger-sources-idUSKBN1CU0FN >T-Mobile US Inc and Sprint Corp are laying the groundwork for special committees of their board of directors to decide on a merger between the third and fourth largest U.S. wireless carriers, according to people familiar with the matter.