President Obama has picked a former telecommunications lobbyist and campaign fund-raiser to serve as chairman of the Federal Communications Commission, raising serious questions about his 2007 pledge that corporate lobbyists would not finance his campaign or run his administration.

When Mr. Obama announced the nomination of Tom Wheeler last week, he said Mr. Wheeler’s knowledge of the industry would help ensure that “we’re staying at the cutting-edge of an industry that again and again we’ve revolutionized here in America.” Some prominent former government officials have endorsed Mr. Wheeler and say he would make telecommunications more competitive.

There is no question that Mr. Wheeler, who was chief executive of the National Cable Television Association for five years and the Cellular Telecommunications and Internet Association for 12 years before becoming a venture capitalist, understands the industry. The question is whether his long career representing the interests of telecommunications companies would make it hard for him to be an independent and fair regulator when consumers have few choices and pay high prices for cellphone, cable TV and broadband services.

He was also a big “bundler” for Mr. Obama in the 2008 and 2012 campaigns, which means that he raised hundreds of thousands of dollars in campaign donations from relatives, friends and business associates. Political campaigns disclose their donors, but they are not required to disclose which of them were recruited by bundlers like Mr. Wheeler. Given his background, it is almost certain that he raised money from people whose companies he would regulate, creating potential conflicts of interest.