Board Thread:Speculation House/@comment-14909251-20170522044827/@comment-14909251-20170709220636

I suspect the White Fang has some kind of presence in all the Kingdoms, though it varies based on circumstances. We know Atlas has Mantle, an impoverished city, so there may be a White Fang presence there to some extent and perhaps some in Atlas the city. However, it is going to be more limited than their presence in other Kingdoms with weaker governments. Tukson fleeing to Vacuo may be due to it being a more tolerant Kingdom, but it is important to remember that Adam was leading a rogue faction at that time.

Even if there was a White Fang presence, it doesn't mean he suspected there would be trouble. It may just be that what sympathizers Adam had were more likely in other areas. Also important to state that Vacuo may also be the only place where he could expect some form of protection from the White Fang. Just because they are more accepting of Faunus doesn't mean Vacuo is devoid of racist tendencies from either side, but it does mean someone could find a community that will protect any person regardless of history. Atlas is obviously not going to protect him, Mistral is too close to the White Fang, and Menagerie is a similar situation. That only leaves Vacuo.