On 13th August 2013, the US Department of Justice (DOJ) and attorneys general from six US states and the District of Columbia filed suit in the US District Court for the District of Columbia to block the merger between US Airways and American Airlines. Days before, a group of American Airlines customers filed a claim that the merger would violate Section 7 of the Clayton Act.

Code Section 409A is, in part, a response to perceived deferred compensation abuses at companies like Enron and WorldCom. The story of Code Section 409A’s six month delay provision is inextricably tied to the Enron and WorldCom bankruptcies.