I'm scratching my head over how even liberals can think this is somehow improper. This is what politics is all about, building support for your positions. Democrats have done the exact same thing for years. Bill Clinton specialized in this kind of thing. The NY Times is extremely selective in its reasoning. Is fundraising proper only when it is for causes the NY Times espouses? Apparently so, according to them.
Papa is getting active, I like that. He can do the party a lot of good.
Btw, this filibuster tactic is almost certain to backfire badly on the liberals someday, unless a stop is put to it pronto. The Republicans of the 1960s and 1970s had way too much class and respect for institutions to try this sort of obstructive tactic when they were in the perpetual minority, attributes obviously not shared by today's Democrats. What goes around comes around, liberals....