Yes, SSRs in the US tend to interrogate for fewer types of Comm-B data
You can see the effect if you go to FlightAware ADS-B Coverage Map - FlightAware, switch to Data Coverage, and enable the “weather” option (the magenta layer below)
Weather-data coverage requires more Comm-B data types; you can see how this varies a lot by location, and there are only a handful of SSRs (with very clearly defined coverage areas) in North America that are interrogating for that data, with very little coverage in the US.
Brazil is similar.