Comment by deltarholamda

>The issue here is in the way it is deducted.

The issue is that the rules changed. Businesses that relied on the former rules are now faced with a (possibly insurmountable) challenge to accommodate the new rules.

Washington loves to fiddle with tax rules, and lobbyists spend a lot of time and money encouraging it, but nobody can anticipate the ripple effects. It all looks great on CBO spreadsheets and congressional press releases, but the real-world impacts can be devastating.