The only specific example I can give you is that PALS survey that someone mentioned on disability. In fact, we're part of a research project led by university researchers who rely on the PALS survey for their information.
I know there have been other surveys that have been dropped.
I think this has been overshadowed or hasn't gotten as much attention as the census issue, but it seems that there's almost an effort to undermine the data and evidence base that we need for decision-making. That's very troubling.