We have a tag for travel with wiki guidance that reads:
For questions about the movement of people between locations, includes migration.
This tag is for questions about the movement of people between locations. This includes questions about migration and similar styles of journey.
I found when looking for a tag for migration, but it took me several tries, as nothing comes up when searching for "migration."
I have enough rep on travel to propose synonyms but, when I tried to do so, I got an error message saying:
Failed to propose synonym:
The suggested tag must exist in the system before suggesting it as a synonym!
I propose that the synonym comes to pass. If possible, I'd love to get the Synonymizer badge in the process (yeah yeah, badge hunters). Might this mean tagging a post with migration to create it and then proposing the synonym and hoping enough people see it and vote on it? Crazy path...