FILE – In this May 8, 2014, file photo David Cohen, Executive Vice President, Comcast Corporation testifies during the House Judiciary Subcommittee on Regulatory Reform, Commercial, and Antitrust Law oversight hearing on the proposed merger of Comcast and Time Warner Cable, on Capitol Hill in Washington. President Joe Biden is nominating Cohen to serve as his ambassador to Canada, according to the White House. (AP Photo/Carolyn Kaster, File)