USA · Tier 1 · closed league
MLS
In US-sports termsBuilt exactly like the NFL or NBA — a closed league of franchises with a playoff (MLS Cup) and zero fear of relegation. The most American thing in world soccer.
What it is
Major League Soccer — the top US/Canada division. Around 30 franchises in Eastern and Western Conferences, a regular season, then a playoff bracket for the MLS Cup.
How you get in
You don't get promoted in — you buy an expansion franchise. It's a closed, single-entity league by design.
What it feeds
The Supporters' Shield (best regular-season record) and the MLS Cup (playoff champion) both earn Concacaf Champions Cup spots. Nobody gets relegated out.
This closed model is the single biggest difference between US soccer and the rest of the world — trace the red line to the tier below.