You heard it right. According to an op-ed just run by the Seattle Post-Intelligencer, Washington State is considering subjecting foster parents within the state to compulsory unionism, which could cause some serious problems. The piece cites:

If forced to join, I predict foster parents already fed up with the
system will depart in droves. If even 20 percent leave already thin
ranks, it will be a foster care disaster.

The author also brands the idea as a "beachhead," and that:

Once a precedent is set, it will be easy to expand the scope because virtually all children in foster care are special needs.

Sounds like union officials in Washington are once again using the legislature to expand their special privileges rather than soliciting voluntary support of those they seek to organize. Not to mention the fact that these are foster parents we're talking about here.