This IS indeed HUGE

The Postal Service Reform Act will require retired postal employees to enroll in Medicare when eligible, while dropping a previous mandate that forced the agency to cover its health care costs years in advance.

Those two measures would save the USPS nearly $50 billion over the next decade, according to the House Oversight Committee.

The legislation will also require the USPS to create an online dashboard with local and national delivery time data.

[...]

[Until now, u]nlike other government agencies, the USPS generally does not receive taxpayer funding, and instead must rely on revenue from stamps and package deliveries to support itself.

And unlike private courier services such as UPS and FedEx, the USPS cannot excise unprofitable routes because Congress stipulates that the Postal Service delivers to all homes in America – including a remote community in the Grand Canyon, where the mail is delivered by mule. And Postal Service pricing must be approved by the Postal Regulatory Commission, an independent government agency.

[...]

[Postmaster General Louis] DeJoy said last year that longer first-class mail delivery time.

  CNN

As often is the case, the law doesn't go far enough.

“The bill is woefully insufficient because it does nothing to improve mail service. It takes the pressure off of the Postal Service to better understand and to reduce its costs. And it doesn’t sufficiently empower the Postal Regulatory Commission, which right now is very small and has very tiny resources compared to the Postal Service.”

But it's a huge step forward.