Update #2: It's not 100% obvious how vigorously The Hill is now updating its tally. According to Poliitico, Hank Johnson and Donna Edwards are not going to attend. So, I'll start adding things here that appear in press that aren't yet reflected in The Hill's tally.
Update#1: The Hill is maintaining a tally, so I've stopped updating this one.
Have publicly said that they won’t go to Bibi’s proposed March 3 speech to Congress if it is not postponed/cancelled: