If Global Security concludes that you're homeless, or without a useful function on Earth, you will be frog marched onto colony ship and given an estate to manage the size of Rhode Island on a planet that no one worthwhile is interested in living on yet.
If above is true, then the maximum number of children (and spouses) a drone worker on Earth should be allowed to generate is also dictated by which planet they live on. Or more accurately, that the immensity or lack thereof of their living allowance is dictated by "job" and that their living allowance (living space + allowed number of family members + consumables + necessities.) is also greater the further their homeworld is from Earth.
Even if you are the president, if you have too many children, a number that is probably considerably larger than the presidents personal secretary is allowed to have, lets say 15 kids, you still might might be asked to live someplace else that has room for all your children as soon as you have 16.
The flip side on this is that if you are the important Federation drone taking care of business on Earth, and you divorce your spouse, then that person and possibly any of your combined children, that you are less than interested in continuing to look after, will be deported if their living allowance is now independently based on only their own importance to the Federation and they are not a useful part of the mechanism keeping Earth and the Federation running.
Usefulness not entitlement.
I know I am making it sound like status, but really, Earth is just full of important people doing important things that need elbow room to continue making sure that the Federation stands, and yes that does include all the menial jobs like emptying Rubbish bins, at least until those jobs were taken over by holograms and all the former trash collectors are now governing outer colony worlds.
As more advanced holographic slaves replace the menial human workforce on Earth, does that mean that the living allowances for the remaining Federation citizens still on Earth are increasing or that different labour departments are allowed more drones?
Can you see the Federation allowing Unions to fight the holoassimilation of human labour resources? I know I certainly can't.
Would you rather be a waiter on Earth or the Governor of a distant moon? The two jobs probably have the same security clearance and require the same citizen status yet provide starkly contrasting living allowances, because there are massive incentives to leave earth behind and massive ongoing punitive penalties to stay on Earth.
Earth is small.
Also it seems like the Federation is leasing the Planet entirely and that there might not actually be a human government on Earth at all.
There is no human homeworld.