US airlines are suing the Biden administration over a new rule to make certain fees easier to spot

U.S. airlines are suing to block the Biden administration from requiring greater transparency over fees that the carriers charge their passengers, saying that a new rule would confuse consumers by giving them too much information during the ticket-buying process.

The U.S. Transportation Department said Monday it will vigorously defend the rule against what it called “hidden junk fees.”

American, Delta, United and three other carriers, along with their industry trade group, sued the Transportation Department in a federal appeals court on Friday, asking the court to overturn the rule.

The trade group, Airlines for America, said the Transportation Department is going beyond its authority by attempting “to regulate private business operations in a thriving marketplace.” The airlines said the administration hasn’t shown that consumers can’t get information about fees already.