That allowed passengers to fix mistakes, such as a misspelled name or a wrong date. They could just cancel the ticket and rebook, as long as their departure date was more than a week away. But this government-mandated "out" clause probably also cost airlines millions in revenue. Now, regulators want to expand that rule to travel agencies, requiring that they also offer the same option for customers. A vast majority of agents already abide by the 24-hour rule, but a few travel retailers have discovered ways to weasel their way out. If history is any guide, this rule will be as tough to enforce as version one. Unscrupulous ticket sellers love to redefine "day" or add new policies of their own to make it difficult to invoke this controversial clause. The only way we'll benefit from this proposed regulation, assuming it's adopted, is if we remember it - and invoke it. Get the full story at USA Today