The Galactic Federation plays an important role in "Rick and Morty" Season 3.According to speculations, the federation helps rescue Rick but the downside, they may take over Earth.
The show's creators may have subtly hinted at the importance of the federation in rescuing Rick from prison when they revealed the Galactic Federation website. The site contains possible spoilers for "Rick and Morty" Season 3, including how Rick's rescue unfolds.
A hint to Rick's rescue in "Rick and Morty" Season 3 is revealed by a certain user named Fr33R1CK5455. This user secretly hacked a private chat group in the Galactic Federation website. According to Tripped Media, this user turned out to be a Gromflomite who also created the private channel.
However, this Gromflomite and Fr33R1CK5455 could be the same user. It is supposedly likely that the Gromflomites are planning to save Rick from prison in "Rick and Morty" Season 3. The user's ability to hack the channel tells a lot about its importance in saving Rick.
Whoever Fr33R1CK545 is can easily access data from the Galactic Federation site, possibly including maps, to help free Rick. After all, the website contains sensitive information about the prisoners of the federation. Unfortunately, according to Indie Wire, the website does not reveal where Rick is being held as prisoner. Fr33R1CK545 would have to hack the system to rescue the scientist in "Rick and Morty" Season 3.
Meanwhile, "Rick and Morty" Season 3 takes off after Morty, Summer and their parents return to Earth. The planet is now inhabited by aliens who seem to co-exist with the humans. Apparently, the Galactic Federation has taken control of the people on Earth.
There are disadvantages to their presence on Earth. As teased in the Season 2 Finale, the federation now controls the humans. They are being monitored daily from their homes and even on the streets. This hints that the federation becomes a strong and powerful opponent to beat in "Rick and Morty" Season 3.