The wording changed on Find out if you’re eligible to sponsor relatives perhaps in 2015 or so (I checked in the Internet Archive) and I do not comprehend the new one at all. First of all, I checked the Immigration and Refugee Protection Act (S.C. 2001, c. 27) and all it says is the unhelpful
12 (1) A foreign national may be selected as a member of the family class on the basis of their relationship as the spouse, common-law partner, child, parent or other prescribed family member of a Canadian citizen or permanent resident.
Second, now I absolutely do not understand what rule governs the immigration of siblings as this page now only talks of them in negative:
You may sponsor one relative, related by blood or adoption, of any age if you meet all of the conditions, including:
you don't have a living relative you could sponsor instead, such as a:
brother or sister
Now, I have a brother who is above 18 and my parents and still alive but they don't want to immigrate while my brother just might. I am a Canadian citizen. So what's the rule now...? More importantly, what's the source of the rule, surely not this confusing webpage?
There's http://laws-lois.justice.gc.ca/eng/regulations/SOR-2002-227/page-23.html#h-69 also but I can't make heads or tails of it.