Okay, I'll play. Attached to what? We tried attaching it to Ukraine/Israel aid, and the Democrat response was "fine, we won't get any aid to Ukraine or Israel." So that failed.
Or should they have tried attaching it to the continuing resolution as a whole, and just stopped the whole government? Because that was threatened too, except the problem was that GOP members of the Problem Solvers Caucus said they wouldn't support a shutdown over that issue, so the votes weren't there. That's what happens when you have a razor-thin majority - it isn't just a small handful of conservatives who have power, but rather every handful of moderates as well.
How about the GOP learn to point the finger and say "YOU shut the Government down!". Attach it to any major spending bill or CR. If Biden won't sign it, point the finger at him! If Schumer won't pass it, point the finger at him!
Quit being bleep. Take up a collection and buy a spine.
The Democrats do what they do because it works and will keep doing it because it works.