I'm pretty sure the Federation will believe that, too.
The Federation believed that every time they met the criteria they were given, there was a new hoop for them to jump through.
The Federation believes that a wildlife habitat should have four basic elements: food, water, cover and a safe site to raise young.
For a time, the Federation believed the modified physiology prevailed throughout the whole empire.
Provided we can continue to make the Federation believe in us, we find another planet.
"I see that the Federation does not believe in performing maintenance on the lighting systems," he gloated.
Consequently, the Federation believes that it can allocate its diplomatic resources to better effect elsewhere.
At least the Federation believes in "help" screens, thought the Ferengi.
"So now the Federation believes people are guilty until proven innocent?"
The Federation has always believed that each world is unique enough to decide for itself.