The Biden administration is on a mission to crack down on junk fees. Here's who's fighting to keep them.

• President Joe Biden earlier this year said his administration would crack down on hidden fees.
• But lobbyists are pushing back against proposed rules that could boost transparency, per WaPo.
• WaPo examined federal lobbying files and hundreds of filings that were sent to federal agencies.

From a dizzying array of airline fees to add-ons tacked on to concert ticket prices, Americans are fed up with hidden fees.