Dixon was well aware that many attempts to challenge the NFL had foundered due to financial troubles. The WFL, for instance, was plagued by teams that were so badly underfinanced that they could not meet the most basic expenses. With this in mind, Dixon wanted to ensure that USFL teams had the wherewithal to put a credible product on the field. To that end, the league required potential owners to submit to a detailed due diligence and meet strict capitalization requirements. They were also required to post a $1.5 million letter of credit for emergencies.