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News organizations cultivate a reputation for demanding transparency, whether by suing for access to government documents, dispatching camera crews to the doorsteps of recalcitrant politicians, or editorializing in favor of open government.

But now many of the country's biggest media companies 2014 which own dozens of newspapers and TV news operations 2014 are flexing their muscle in Washington in a fight against a government initiative to increase transparency of political spending.

The corporate owners or sister companies of some of the biggest names in journalism 2014 NBC News, ABC News, Fox News, the Washington Post, the Wall Street Journal, USA Today, Politico, the Atlanta Journal-Constitution, and dozens of local TV news outlets 2014 are lobbying against a Federal Communications Commission measure to require broadcasters to post political ad data on the Internet.

As we have recently detailed, political ad data is public by law but is not widely accessible because it is currently kept only in paper files at individual stations. The FCC has proposed fixing that by requiring broadcasters to post on the Internet details of political ad purchases including the identity of the buyer and the price.