Another good example of this is the Keystone XL pipeline issue. The Obama administration isn't opposed to Keystone XL on environmental grounds. It's blocking the construction of the pipeline because the railroad industry (including the Burlington Northern Santa Fe Railroad, which is wholly owned by Warren Buffett) is moving crude oil all over North America.
the railroad industry (including the Burlington Northern Santa Fe Railroad, which is wholly owned by Warren Buffett)
BNSF is a publicly held company, through Berkshire Hathaway B shares.