Not even as active as the JWs (whom I have not seen for around a year now), nevertheless I get an occasional leaflet or other publication in my letterbox that seems to be Seventh Day Adventist in origin.
The booklet I received the other day was entitled "National Sunday Law". I also had received this book years ago when I had some dealings with the SDAs.
From Reddit: "National Sunday law involves a conspiracy theory which alleges that the United States government is on the verge of enacting a national blue law that would make Sunday a day of rest and worship. The theory depends on the idea that the Pope is the Antichrist and the Mark of the Beast is worshipped on Sunday. Sinister forces (read: the Vatican) are conspiring to enact a national Sunday law in the United States, which would be the trigger that unleashes the fulfilment of the prophecies found in the Biblical books of Daniel and Revelation. In addition, this law would outlaw worshipping on Saturday, thus beginning a period of persecution of those who worship on Saturday, or Sabbath."
https://www.reddit.com/r/melbourne/comments/198g3cq/national_sunday_law_book_return/
The above summary, although not identical in its conspiratorial religious undertones, may sound somewhat familiar.