Larger airlines, which charge higher prices, have long argued that this puts them at a disadvantage.

The airlines argued that they did not want to present any "unverified" information that might turn out to be wrong.

Officials can look at security and see gaps, but airlines and others can argue about their significance.

The airlines also argue there are multiple ways for travelers to redeem miles beyond simply plane tickets.

The airline argues that the prudent investor rate should be closer to 12 percent than to the 5.1 percent used by the agency.

The airline argues that having this information violates the employee's privacy.

Now, to reduce the government's equity stake in the company, the airline is arguing that the plan was actually much better off.

The airlines have been arguing that they pay nearly 95 percent of the system's costs but use only about two-thirds of its services.

The airlines argue that wiring planes to capture more data would require taking them out of service for long periods, at high cost.

The airlines argue, though, that that tax made it harder for them to raise ticket prices.