Comcast, which employs more than 100 lobbyists, spent almost $19 million last year on lobbying activities. Its president and CEO, Brian L. Roberts, is a golf buddy of President Obama’s, and a Democratic donor who has contributed thousands of dollars not only to the president’s campaigns, but also to the Democratic Party of Pennsylvania, the Democratic Senatorial Campaign Committee, the DNC Services Corporation, and to Steny Hoyer, Kirsten Gillibrand, and Bob Casey. Roberts’ executive vice president, David Cohen, is a former aide to Democratic bigwig Ed Rendell. Cohen skirts lobbying regulations through loopholes, has raised more than $2 million for...