He mentioned the problem during his town hall - https://www.democraticunderground.com/10143447853
(snip)
...an attendee who asked why Democrats have not moved to impeach Trump, stating her belief that “everything that Trump is doing is leading us down an authoritative rule.” “Do more. I like you and I will vote for you if you are brave, and you do what we need,” the attendee said. “We need him impeached, we need him removed.”
Ossoff in response said he “strongly” agreed with the attendee, but told the audience that the move is not currently feasible given the current makeup of the House of Representatives, which is responsible for introducing articles of impeachment. “The only way to achieve what you want to achieve is to have a majority United States House of Representatives,” Ossoff said. “And believe me, I’m working on it every single day, every single day.”
People need to understand that we are in the minority of both chambers of Congress. That was a result of the non-voters, the "protest" voters, and the "revenge" voters.
What they COULD do is more "obstruction" and some have started doing that. But I think they are still operating out of a past mindset that their constituents "want them to work across the aisle, etc. etc.", and that whole sentiment seems to have disintegrated now. There are a lot of "newer" (D) members of Congress there who came in during and after the 2018 tsunami, so they don't all know the tricks of the trade.