Why breaking up Facebook won't be easy

Busting up the nation’s tech giants would be much harder than making a campaign pledge. Corporate breakups are a huge, and rare, undertaking for the government, and a social media company like Facebook presents unique challenges that didn't exist with past antitrust successes like the dismembering of AT&T in the 1980s. Here are some of the obstacles standing in the way of turning this rallying cry into reality:

1. Proving Facebook is a monopoly
2. Deciding what to break up
3. Antitrust cases take time and money
4. The legal bar has gotten higher
5. Limits on the president’s power