In general, such permission is not granted . You can apply for an exception (and sometimes, rarely, they are granted). In your application you would probably need to provide proof of such matters as: you, your wife and child do not draw any social security support, but have enough income to cover your living costs you do not have any outstanding debts in the register (in German: Betriebungen) you are integrated into Swiss life, and understand the culture you speak the local official Swiss language you are employed or self-employed, and pay your taxes properly perhaps also: your wife is employed your wife is in agreement with the application and is willing (perhaps also with other Swiss family members) to state that she would help support your brother you have a separate room in which he could live, and you can afford to pay that rent you have already been supporting him financially (and possibly emotionally), for some time, where he lives now he has no other close family/relatives where he lives now or none that he must support or who help him perhaps also: he has no spouse or minor children (so he's not going to try to bring more people into Switzerland) he has begun to learn the Swiss language of the canton in which you live he is willing and able to work you will guarantee to cover all his costs once he gets here.
It might also be to your advantage if you managed to get your C-permit before you made the application.
Yep, not possible unless he gets a job here himself or marries/partners a Swiss/EU national. And can’t bring siblings anyway, only your spouse and your own children under 18.
Yes, you're both right. However, the principle of permit applications is always that they must be decided on their individual merits. And only on the basis of some exceptional circumstances (like the "no family" and "has been supported" that I mentioned above) can some - very rare - exceptions be made.
Please be aware that if your brother were ever to choose this route, he and the Swiss woman (or man) he finds will need to prove that they have a real, long-term relationship. The immigration authorities are opposed to fake marriages entered into only as a means to get a permit, and so they can conduct substantial research on the couple.